From f35b6c6fe964e7d4a9f710ac482364f14267410b Mon Sep 17 00:00:00 2001
From: Chris Sienkiewicz <chsienki@microsoft.com>
Date: Wed, 28 Aug 2024 10:11:29 -0700
Subject: [PATCH] Change UseConsolidatedMvcViews to default to true (#10795)

* Change UseConsolidatedMvcViews to default to true
* Update baselines
* Update LSP test
---
 ...ctiveWithViewImports_DesignTime.codegen.cs |  4 +-
 ...DirectiveWithViewImports_DesignTime.ir.txt |  4 +-
 ...iveWithViewImports_DesignTime.mappings.txt |  2 +-
 ...irectiveWithViewImports_Runtime.codegen.cs |  6 +-
 ...uteDirectiveWithViewImports_Runtime.ir.txt |  4 +-
 .../Basic_DesignTime.codegen.cs               |  4 +-
 .../Basic_DesignTime.ir.txt                   |  4 +-
 .../Basic_DesignTime.mappings.txt             | 12 +--
 .../Basic_Runtime.codegen.cs                  |  6 +-
 .../Basic_Runtime.ir.txt                      |  4 +-
 ...IncompleteDirectives_DesignTime.codegen.cs |  4 +-
 .../IncompleteDirectives_DesignTime.ir.txt    |  4 +-
 ...completeDirectives_DesignTime.mappings.txt | 14 +--
 .../IncompleteDirectives_Runtime.codegen.cs   |  6 +-
 .../IncompleteDirectives_Runtime.ir.txt       |  4 +-
 .../InheritsViewModel_DesignTime.codegen.cs   |  4 +-
 .../InheritsViewModel_DesignTime.ir.txt       |  4 +-
 .../InheritsViewModel_DesignTime.mappings.txt |  4 +-
 .../InheritsViewModel_Runtime.codegen.cs      |  6 +-
 .../InheritsViewModel_Runtime.ir.txt          |  4 +-
 ...eritsWithViewImports_DesignTime.codegen.cs |  4 +-
 .../InheritsWithViewImports_DesignTime.ir.txt |  4 +-
 ...itsWithViewImports_DesignTime.mappings.txt |  2 +-
 ...InheritsWithViewImports_Runtime.codegen.cs |  6 +-
 .../InheritsWithViewImports_Runtime.ir.txt    |  4 +-
 .../InjectWithModel_DesignTime.codegen.cs     |  4 +-
 .../InjectWithModel_DesignTime.ir.txt         |  4 +-
 .../InjectWithModel_DesignTime.mappings.txt   | 10 +-
 .../InjectWithModel_Runtime.codegen.cs        |  6 +-
 .../InjectWithModel_Runtime.ir.txt            |  4 +-
 .../InjectWithModel_Runtime.mappings.txt      |  8 +-
 .../InjectWithSemicolon_DesignTime.codegen.cs |  4 +-
 .../InjectWithSemicolon_DesignTime.ir.txt     |  4 +-
 ...njectWithSemicolon_DesignTime.mappings.txt | 18 ++--
 .../InjectWithSemicolon_Runtime.codegen.cs    |  6 +-
 .../InjectWithSemicolon_Runtime.ir.txt        |  4 +-
 .../InjectWithSemicolon_Runtime.mappings.txt  | 16 ++--
 .../Inject_DesignTime.codegen.cs              |  4 +-
 .../Inject_DesignTime.ir.txt                  |  4 +-
 .../Inject_DesignTime.mappings.txt            |  4 +-
 .../Inject_Runtime.codegen.cs                 |  6 +-
 .../Inject_Runtime.ir.txt                     |  4 +-
 .../Inject_Runtime.mappings.txt               |  4 +-
 ...nvalidNamespaceAtEOF_DesignTime.codegen.cs |  4 +-
 .../InvalidNamespaceAtEOF_DesignTime.ir.txt   |  4 +-
 .../InvalidNamespaceAtEOF_Runtime.codegen.cs  |  6 +-
 .../InvalidNamespaceAtEOF_Runtime.ir.txt      |  4 +-
 ...lformedPageDirective_DesignTime.codegen.cs |  4 +-
 .../MalformedPageDirective_DesignTime.ir.txt  |  4 +-
 .../MalformedPageDirective_Runtime.codegen.cs |  6 +-
 .../MalformedPageDirective_Runtime.ir.txt     |  4 +-
 ...lExpressionTagHelper_DesignTime.codegen.cs |  4 +-
 ...ModelExpressionTagHelper_DesignTime.ir.txt |  4 +-
 ...xpressionTagHelper_DesignTime.mappings.txt |  8 +-
 ...odelExpressionTagHelper_Runtime.codegen.cs |  6 +-
 .../ModelExpressionTagHelper_Runtime.ir.txt   |  4 +-
 .../Model_DesignTime.codegen.cs               |  4 +-
 .../Model_DesignTime.ir.txt                   |  4 +-
 .../Model_DesignTime.mappings.txt             |  2 +-
 .../Model_Runtime.codegen.cs                  |  6 +-
 .../Model_Runtime.ir.txt                      |  4 +-
 .../MultipleModels_DesignTime.codegen.cs      |  4 +-
 .../MultipleModels_DesignTime.ir.txt          |  4 +-
 .../MultipleModels_DesignTime.mappings.txt    |  4 +-
 .../PageWithNamespace_DesignTime.codegen.cs   |  2 +-
 .../PageWithNamespace_DesignTime.ir.txt       |  2 +-
 .../PageWithNamespace_DesignTime.mappings.txt |  2 +-
 .../PageWithNamespace_Runtime.codegen.cs      |  2 +-
 .../PageWithNamespace_Runtime.ir.txt          |  2 +-
 ...LeadingPageDirective_DesignTime.codegen.cs |  4 +-
 ...thNoLeadingPageDirective_DesignTime.ir.txt |  4 +-
 ...hNoLeadingPageDirective_Runtime.codegen.cs |  6 +-
 ...eWithNoLeadingPageDirective_Runtime.ir.txt |  4 +-
 .../RazorPage_WithCssScope.codegen.cs         |  6 +-
 .../RazorPage_WithCssScope.ir.txt             |  4 +-
 ...ullableModel_LangNew_DesignTime.codegen.cs |  4 +-
 ...NonNullableModel_LangNew_DesignTime.ir.txt |  4 +-
 ...lableModel_LangNew_DesignTime.mappings.txt |  8 +-
 ...onNullableModel_LangNew_Runtime.codegen.cs |  6 +-
 ...ithNonNullableModel_LangNew_Runtime.ir.txt |  4 +-
 ...NullableModel_LangNew_Runtime.mappings.txt |  6 +-
 ...ullableModel_LangOld_DesignTime.codegen.cs |  4 +-
 ...NonNullableModel_LangOld_DesignTime.ir.txt |  4 +-
 ...lableModel_LangOld_DesignTime.mappings.txt |  8 +-
 ...onNullableModel_LangOld_Runtime.codegen.cs |  6 +-
 ...ithNonNullableModel_LangOld_Runtime.ir.txt |  4 +-
 ...NullableModel_LangOld_Runtime.mappings.txt |  6 +-
 ...ullableModel_LangNew_DesignTime.codegen.cs |  4 +-
 ...ithNullableModel_LangNew_DesignTime.ir.txt |  4 +-
 ...lableModel_LangNew_DesignTime.mappings.txt |  8 +-
 ...thNullableModel_LangNew_Runtime.codegen.cs |  6 +-
 ...e_WithNullableModel_LangNew_Runtime.ir.txt |  4 +-
 ...NullableModel_LangNew_Runtime.mappings.txt |  6 +-
 ...ullableModel_LangOld_DesignTime.codegen.cs |  4 +-
 ...ithNullableModel_LangOld_DesignTime.ir.txt |  4 +-
 ...lableModel_LangOld_DesignTime.mappings.txt |  8 +-
 ...thNullableModel_LangOld_Runtime.codegen.cs |  6 +-
 ...e_WithNullableModel_LangOld_Runtime.ir.txt |  4 +-
 ...NullableModel_LangOld_Runtime.mappings.txt |  6 +-
 ...gesWithRouteTemplate_DesignTime.codegen.cs |  4 +-
 ...orPagesWithRouteTemplate_DesignTime.ir.txt |  4 +-
 ...sWithRouteTemplate_DesignTime.mappings.txt | 10 +-
 ...rPagesWithRouteTemplate_Runtime.codegen.cs |  6 +-
 ...RazorPagesWithRouteTemplate_Runtime.ir.txt |  4 +-
 ...zorPagesWithoutModel_DesignTime.codegen.cs |  4 +-
 .../RazorPagesWithoutModel_DesignTime.ir.txt  |  4 +-
 ...rPagesWithoutModel_DesignTime.mappings.txt |  8 +-
 .../RazorPagesWithoutModel_Runtime.codegen.cs |  6 +-
 .../RazorPagesWithoutModel_Runtime.ir.txt     |  4 +-
 .../RazorPages_DesignTime.codegen.cs          |  4 +-
 .../RazorPages_DesignTime.ir.txt              |  4 +-
 .../RazorPages_DesignTime.mappings.txt        | 10 +-
 .../RazorPages_Runtime.codegen.cs             |  6 +-
 .../RazorPages_Runtime.ir.txt                 |  4 +-
 .../RazorView_Layout_WithCssScope.codegen.cs  |  6 +-
 .../RazorView_Layout_WithCssScope.ir.txt      |  4 +-
 .../RazorView_WithCssScope.codegen.cs         |  6 +-
 .../RazorView_WithCssScope.ir.txt             |  4 +-
 ...bleModel_NullableContextEnabled.codegen.cs |  6 +-
 ...ullableModel_NullableContextEnabled.ir.txt |  4 +-
 ...eBaseType_NullableContexEnabled.codegen.cs |  6 +-
 ...lableBaseType_NullableContexEnabled.ir.txt |  4 +-
 ...bleModel_NullableContextEnabled.codegen.cs |  6 +-
 ...ullableModel_NullableContextEnabled.ir.txt |  4 +-
 ...Model_NullableContextNotEnabled.codegen.cs |  6 +-
 ...ableModel_NullableContextNotEnabled.ir.txt |  4 +-
 .../Sections_DesignTime.codegen.cs            |  4 +-
 .../Sections_DesignTime.ir.txt                |  4 +-
 .../Sections_DesignTime.mappings.txt          | 10 +-
 .../Sections_Runtime.codegen.cs               |  6 +-
 .../Sections_Runtime.ir.txt                   |  4 +-
 .../UsingDirectives_DesignTime.codegen.cs     |  4 +-
 .../UsingDirectives_DesignTime.ir.txt         |  4 +-
 .../UsingDirectives_DesignTime.mappings.txt   |  8 +-
 .../UsingDirectives_Runtime.codegen.cs        |  6 +-
 .../UsingDirectives_Runtime.ir.txt            |  4 +-
 ...tTagHelperOptionalParam_Runtime.codegen.cs | 30 +++---
 ...onentTagHelperOptionalParam_Runtime.ir.txt | 28 +++---
 ...ewComponentTagHelper_DesignTime.codegen.cs |  8 +-
 .../ViewComponentTagHelper_DesignTime.ir.txt  |  8 +-
 ...ComponentTagHelper_DesignTime.mappings.txt |  6 +-
 .../ViewComponentTagHelper_Runtime.codegen.cs | 10 +-
 .../ViewComponentTagHelper_Runtime.ir.txt     |  8 +-
 .../ViewWithNamespace_DesignTime.codegen.cs   |  2 +-
 .../ViewWithNamespace_DesignTime.ir.txt       |  2 +-
 .../ViewWithNamespace_DesignTime.mappings.txt |  2 +-
 .../ViewWithNamespace_Runtime.codegen.cs      |  2 +-
 .../ViewWithNamespace_Runtime.ir.txt          |  2 +-
 .../_ViewImports_DesignTime.codegen.cs        |  4 +-
 .../_ViewImports_DesignTime.ir.txt            |  4 +-
 .../_ViewImports_DesignTime.mappings.txt      |  4 +-
 .../_ViewImports_Runtime.codegen.cs           |  6 +-
 .../_ViewImports_Runtime.ir.txt               |  4 +-
 ...ddTagHelperDirective_DesignTime.codegen.cs |  4 +-
 .../AddTagHelperDirective_DesignTime.ir.txt   |  4 +-
 ...TagHelperDirective_DesignTime.mappings.txt |  2 +-
 .../AddTagHelperDirective_Runtime.codegen.cs  |  6 +-
 .../AddTagHelperDirective_Runtime.ir.txt      |  4 +-
 .../AttributeDirective_DesignTime.codegen.cs  |  4 +-
 .../AttributeDirective_DesignTime.ir.txt      |  4 +-
 ...AttributeDirective_DesignTime.mappings.txt |  8 +-
 .../AttributeDirective_Runtime.codegen.cs     |  6 +-
 .../AttributeDirective_Runtime.ir.txt         |  4 +-
 ...eTargetingTagHelpers_DesignTime.codegen.cs |  4 +-
 ...ibuteTargetingTagHelpers_DesignTime.ir.txt |  4 +-
 ...argetingTagHelpers_DesignTime.mappings.txt |  6 +-
 ...buteTargetingTagHelpers_Runtime.codegen.cs |  6 +-
 ...ttributeTargetingTagHelpers_Runtime.ir.txt |  4 +-
 .../Await_DesignTime.codegen.cs               |  4 +-
 .../Await_DesignTime.cs-diagnostics.txt       |  4 +-
 .../Await_DesignTime.ir.txt                   |  4 +-
 .../Await_DesignTime.mappings.txt             | 34 +++----
 .../Await_Runtime.codegen.cs                  |  6 +-
 .../Await_Runtime.cs-diagnostics.txt          |  4 +-
 .../Await_Runtime.ir.txt                      |  4 +-
 .../BasicTagHelpers_DesignTime.codegen.cs     |  4 +-
 .../BasicTagHelpers_DesignTime.ir.txt         |  4 +-
 .../BasicTagHelpers_DesignTime.mappings.txt   |  6 +-
 ...cTagHelpers_Prefixed_DesignTime.codegen.cs |  4 +-
 ...BasicTagHelpers_Prefixed_DesignTime.ir.txt |  4 +-
 ...agHelpers_Prefixed_DesignTime.mappings.txt |  6 +-
 ...asicTagHelpers_Prefixed_Runtime.codegen.cs |  6 +-
 .../BasicTagHelpers_Prefixed_Runtime.ir.txt   |  4 +-
 ...pers_RemoveTagHelper_DesignTime.codegen.cs |  4 +-
 ...gHelpers_RemoveTagHelper_DesignTime.ir.txt |  4 +-
 ...rs_RemoveTagHelper_DesignTime.mappings.txt |  6 +-
 ...Helpers_RemoveTagHelper_Runtime.codegen.cs |  6 +-
 ...cTagHelpers_RemoveTagHelper_Runtime.ir.txt |  4 +-
 .../BasicTagHelpers_Runtime.codegen.cs        |  6 +-
 .../BasicTagHelpers_Runtime.ir.txt            |  4 +-
 .../Blocks_DesignTime.codegen.cs              |  4 +-
 .../Blocks_DesignTime.ir.txt                  |  4 +-
 .../Blocks_DesignTime.mappings.txt            | 38 ++++----
 .../Blocks_Runtime.codegen.cs                 |  6 +-
 .../Blocks_Runtime.ir.txt                     |  4 +-
 .../CSharp7_DesignTime.codegen.cs             |  4 +-
 .../CSharp7_DesignTime.ir.txt                 |  4 +-
 .../CSharp7_DesignTime.mappings.txt           | 12 +--
 .../CSharp7_Runtime.codegen.cs                |  6 +-
 .../CSharp7_Runtime.ir.txt                    |  4 +-
 .../CSharp8_DesignTime.codegen.cs             |  4 +-
 .../CSharp8_DesignTime.ir.txt                 |  4 +-
 .../CSharp8_DesignTime.mappings.txt           | 24 ++---
 .../CSharp8_Runtime.codegen.cs                |  6 +-
 .../CSharp8_Runtime.ir.txt                    |  4 +-
 .../CodeBlockAtEOF_DesignTime.codegen.cs      |  4 +-
 .../CodeBlockAtEOF_DesignTime.ir.txt          |  4 +-
 .../CodeBlockAtEOF_DesignTime.mappings.txt    |  2 +-
 .../CodeBlockAtEOF_Runtime.codegen.cs         |  6 +-
 .../CodeBlockAtEOF_Runtime.ir.txt             |  4 +-
 ...BlockWithTextElement_DesignTime.codegen.cs |  4 +-
 ...CodeBlockWithTextElement_DesignTime.ir.txt |  4 +-
 ...ockWithTextElement_DesignTime.mappings.txt |  8 +-
 ...odeBlockWithTextElement_Runtime.codegen.cs |  6 +-
 .../CodeBlockWithTextElement_Runtime.ir.txt   |  4 +-
 .../CodeBlock_DesignTime.codegen.cs           |  4 +-
 .../CodeBlock_DesignTime.ir.txt               |  4 +-
 .../CodeBlock_DesignTime.mappings.txt         |  2 +-
 .../CodeBlock_Runtime.codegen.cs              |  6 +-
 .../CodeBlock_Runtime.ir.txt                  |  4 +-
 .../ComplexTagHelpers_DesignTime.codegen.cs   |  4 +-
 .../ComplexTagHelpers_DesignTime.ir.txt       |  4 +-
 .../ComplexTagHelpers_DesignTime.mappings.txt | 80 ++++++++--------
 .../ComplexTagHelpers_Runtime.codegen.cs      |  6 +-
 .../ComplexTagHelpers_Runtime.ir.txt          |  4 +-
 ...nditionalAttributes2_DesignTime.codegen.cs |  4 +-
 .../ConditionalAttributes2_DesignTime.ir.txt  |  4 +-
 ...itionalAttributes2_DesignTime.mappings.txt | 92 +++++++++----------
 .../ConditionalAttributes2_Runtime.codegen.cs |  6 +-
 .../ConditionalAttributes2_Runtime.ir.txt     |  4 +-
 ...onditionalAttributes_DesignTime.codegen.cs |  4 +-
 .../ConditionalAttributes_DesignTime.ir.txt   |  4 +-
 ...ditionalAttributes_DesignTime.mappings.txt | 48 +++++-----
 .../ConditionalAttributes_Runtime.codegen.cs  |  6 +-
 .../ConditionalAttributes_Runtime.ir.txt      |  4 +-
 ...rTagHelperAttributes_DesignTime.codegen.cs |  4 +-
 ...ectorTagHelperAttributes_DesignTime.ir.txt |  4 +-
 ...agHelperAttributes_DesignTime.mappings.txt |  8 +-
 ...ctorTagHelperAttributes_Runtime.codegen.cs |  6 +-
 ...SelectorTagHelperAttributes_Runtime.ir.txt |  4 +-
 .../DesignTime_DesignTime.codegen.cs          |  4 +-
 .../DesignTime_DesignTime.ir.txt              |  4 +-
 .../DesignTime_DesignTime.mappings.txt        | 18 ++--
 .../DesignTime_Runtime.codegen.cs             |  6 +-
 .../DesignTime_Runtime.ir.txt                 |  4 +-
 ...eAttributeTagHelpers_DesignTime.codegen.cs |  4 +-
 ...icateAttributeTagHelpers_DesignTime.ir.txt |  4 +-
 ...ttributeTagHelpers_DesignTime.mappings.txt |  8 +-
 ...cateAttributeTagHelpers_Runtime.codegen.cs |  6 +-
 ...uplicateAttributeTagHelpers_Runtime.ir.txt |  4 +-
 ...icateTargetTagHelper_DesignTime.codegen.cs |  4 +-
 ...DuplicateTargetTagHelper_DesignTime.ir.txt |  4 +-
 ...ateTargetTagHelper_DesignTime.mappings.txt |  4 +-
 ...uplicateTargetTagHelper_Runtime.codegen.cs |  6 +-
 .../DuplicateTargetTagHelper_Runtime.ir.txt   |  4 +-
 ...cAttributeTagHelpers_DesignTime.codegen.cs |  4 +-
 ...namicAttributeTagHelpers_DesignTime.ir.txt |  4 +-
 ...ttributeTagHelpers_DesignTime.mappings.txt | 62 ++++++-------
 ...amicAttributeTagHelpers_Runtime.codegen.cs |  6 +-
 .../DynamicAttributeTagHelpers_Runtime.ir.txt |  4 +-
 ...yAttributeTagHelpers_DesignTime.codegen.cs |  4 +-
 ...EmptyAttributeTagHelpers_DesignTime.ir.txt |  4 +-
 ...ttributeTagHelpers_DesignTime.mappings.txt |  8 +-
 ...mptyAttributeTagHelpers_Runtime.codegen.cs |  6 +-
 .../EmptyAttributeTagHelpers_Runtime.ir.txt   |  4 +-
 .../EmptyCodeBlock_DesignTime.codegen.cs      |  4 +-
 .../EmptyCodeBlock_DesignTime.ir.txt          |  4 +-
 .../EmptyCodeBlock_DesignTime.mappings.txt    |  2 +-
 .../EmptyCodeBlock_Runtime.codegen.cs         |  6 +-
 .../EmptyCodeBlock_Runtime.ir.txt             |  4 +-
 ...tyExplicitExpression_DesignTime.codegen.cs |  4 +-
 .../EmptyExplicitExpression_DesignTime.ir.txt |  4 +-
 ...ExplicitExpression_DesignTime.mappings.txt |  2 +-
 ...EmptyExplicitExpression_Runtime.codegen.cs |  6 +-
 .../EmptyExplicitExpression_Runtime.ir.txt    |  4 +-
 ...icitExpressionInCode_DesignTime.codegen.cs |  4 +-
 ...ImplicitExpressionInCode_DesignTime.ir.txt |  4 +-
 ...itExpressionInCode_DesignTime.mappings.txt |  6 +-
 ...mplicitExpressionInCode_Runtime.codegen.cs |  6 +-
 ...ptyImplicitExpressionInCode_Runtime.ir.txt |  4 +-
 ...tyImplicitExpression_DesignTime.codegen.cs |  4 +-
 .../EmptyImplicitExpression_DesignTime.ir.txt |  4 +-
 ...ImplicitExpression_DesignTime.mappings.txt |  2 +-
 ...EmptyImplicitExpression_Runtime.codegen.cs |  6 +-
 .../EmptyImplicitExpression_Runtime.ir.txt    |  4 +-
 .../EnumTagHelpers_DesignTime.codegen.cs      |  4 +-
 .../EnumTagHelpers_DesignTime.ir.txt          |  4 +-
 .../EnumTagHelpers_DesignTime.mappings.txt    | 18 ++--
 .../EnumTagHelpers_Runtime.codegen.cs         |  6 +-
 .../EnumTagHelpers_Runtime.ir.txt             |  4 +-
 .../EscapedExpression_DesignTime.codegen.cs   |  4 +-
 .../EscapedExpression_DesignTime.ir.txt       |  4 +-
 .../EscapedExpression_DesignTime.mappings.txt |  8 +-
 .../EscapedExpression_Runtime.codegen.cs      |  6 +-
 .../EscapedExpression_Runtime.ir.txt          |  4 +-
 .../EscapedIdentifier_DesignTime.codegen.cs   |  4 +-
 .../EscapedIdentifier_DesignTime.ir.txt       |  4 +-
 .../EscapedIdentifier_DesignTime.mappings.txt | 14 +--
 .../EscapedIdentifier_Runtime.codegen.cs      |  6 +-
 .../EscapedIdentifier_Runtime.ir.txt          |  4 +-
 .../EscapedTagHelpers_DesignTime.codegen.cs   |  4 +-
 .../EscapedTagHelpers_DesignTime.ir.txt       |  4 +-
 .../EscapedTagHelpers_DesignTime.mappings.txt |  8 +-
 .../EscapedTagHelpers_Runtime.codegen.cs      |  6 +-
 .../EscapedTagHelpers_Runtime.ir.txt          |  4 +-
 ...licitExpressionAtEOF_DesignTime.codegen.cs |  4 +-
 .../ExplicitExpressionAtEOF_DesignTime.ir.txt |  4 +-
 ...citExpressionAtEOF_DesignTime.mappings.txt |  2 +-
 ...ExplicitExpressionAtEOF_Runtime.codegen.cs |  6 +-
 .../ExplicitExpressionAtEOF_Runtime.ir.txt    |  4 +-
 ...ExpressionWithMarkup_DesignTime.codegen.cs |  4 +-
 ...icitExpressionWithMarkup_DesignTime.ir.txt |  4 +-
 ...pressionWithMarkup_DesignTime.mappings.txt |  2 +-
 ...citExpressionWithMarkup_Runtime.codegen.cs |  6 +-
 ...xplicitExpressionWithMarkup_Runtime.ir.txt |  4 +-
 .../ExplicitExpression_DesignTime.codegen.cs  |  4 +-
 .../ExplicitExpression_DesignTime.ir.txt      |  4 +-
 ...ExplicitExpression_DesignTime.mappings.txt |  2 +-
 .../ExplicitExpression_Runtime.codegen.cs     |  6 +-
 .../ExplicitExpression_Runtime.ir.txt         |  4 +-
 .../ExpressionsInCode_DesignTime.codegen.cs   |  4 +-
 .../ExpressionsInCode_DesignTime.ir.txt       |  4 +-
 .../ExpressionsInCode_DesignTime.mappings.txt | 16 ++--
 .../ExpressionsInCode_Runtime.codegen.cs      |  6 +-
 .../ExpressionsInCode_Runtime.ir.txt          |  4 +-
 ...unctionsBlockMinimal_DesignTime.codegen.cs |  4 +-
 .../FunctionsBlockMinimal_DesignTime.ir.txt   |  4 +-
 ...ctionsBlockMinimal_DesignTime.mappings.txt |  2 +-
 .../FunctionsBlockMinimal_Runtime.codegen.cs  |  6 +-
 .../FunctionsBlockMinimal_Runtime.ir.txt      |  4 +-
 .../FunctionsBlock_DesignTime.codegen.cs      |  4 +-
 .../FunctionsBlock_DesignTime.ir.txt          |  4 +-
 .../FunctionsBlock_DesignTime.mappings.txt    |  6 +-
 .../FunctionsBlock_Runtime.codegen.cs         |  6 +-
 .../FunctionsBlock_Runtime.ir.txt             |  4 +-
 .../HiddenSpansInCode_DesignTime.codegen.cs   |  4 +-
 .../HiddenSpansInCode_DesignTime.ir.txt       |  4 +-
 .../HiddenSpansInCode_DesignTime.mappings.txt |  4 +-
 .../HiddenSpansInCode_Runtime.codegen.cs      |  6 +-
 .../HiddenSpansInCode_Runtime.ir.txt          |  4 +-
 ...mentWithQuote_Double_DesignTime.codegen.cs |  4 +-
 ...lCommentWithQuote_Double_DesignTime.ir.txt |  4 +-
 ...CommentWithQuote_Double_Runtime.codegen.cs |  6 +-
 ...HtmlCommentWithQuote_Double_Runtime.ir.txt |  4 +-
 ...mentWithQuote_Single_DesignTime.codegen.cs |  4 +-
 ...lCommentWithQuote_Single_DesignTime.ir.txt |  4 +-
 ...CommentWithQuote_Single_Runtime.codegen.cs |  6 +-
 ...HtmlCommentWithQuote_Single_Runtime.ir.txt |  4 +-
 .../Implements_DesignTime.codegen.cs          |  4 +-
 .../Implements_DesignTime.ir.txt              |  4 +-
 .../Implements_DesignTime.mappings.txt        |  4 +-
 .../Implements_Runtime.codegen.cs             |  6 +-
 .../Implements_Runtime.ir.txt                 |  4 +-
 ...licitExpressionAtEOF_DesignTime.codegen.cs |  4 +-
 .../ImplicitExpressionAtEOF_DesignTime.ir.txt |  4 +-
 ...citExpressionAtEOF_DesignTime.mappings.txt |  2 +-
 ...ImplicitExpressionAtEOF_Runtime.codegen.cs |  6 +-
 .../ImplicitExpressionAtEOF_Runtime.ir.txt    |  4 +-
 .../ImplicitExpression_DesignTime.codegen.cs  |  4 +-
 .../ImplicitExpression_DesignTime.ir.txt      |  4 +-
 ...ImplicitExpression_DesignTime.mappings.txt |  6 +-
 .../ImplicitExpression_Runtime.codegen.cs     |  6 +-
 .../ImplicitExpression_Runtime.ir.txt         |  4 +-
 ...IncompleteDirectives_DesignTime.codegen.cs |  4 +-
 .../IncompleteDirectives_DesignTime.ir.txt    |  4 +-
 ...completeDirectives_DesignTime.mappings.txt | 28 +++---
 .../IncompleteDirectives_Runtime.codegen.cs   |  6 +-
 .../IncompleteDirectives_Runtime.ir.txt       |  4 +-
 .../IncompleteTagHelper_DesignTime.codegen.cs |  4 +-
 .../IncompleteTagHelper_DesignTime.ir.txt     |  4 +-
 ...ncompleteTagHelper_DesignTime.mappings.txt |  2 +-
 .../IncompleteTagHelper_Runtime.codegen.cs    |  6 +-
 .../IncompleteTagHelper_Runtime.ir.txt        |  4 +-
 .../Inherits_DesignTime.codegen.cs            |  4 +-
 .../Inherits_DesignTime.cs-diagnostics.txt    | 18 ++--
 .../Inherits_DesignTime.ir.txt                |  4 +-
 .../Inherits_DesignTime.mappings.txt          |  4 +-
 .../Inherits_Runtime.codegen.cs               |  6 +-
 .../Inherits_Runtime.cs-diagnostics.txt       | 18 ++--
 .../Inherits_Runtime.ir.txt                   |  4 +-
 .../InlineBlocks_DesignTime.codegen.cs        |  4 +-
 .../InlineBlocks_DesignTime.ir.txt            |  4 +-
 .../InlineBlocks_DesignTime.mappings.txt      | 10 +-
 .../InlineBlocks_Runtime.codegen.cs           |  6 +-
 .../InlineBlocks_Runtime.ir.txt               |  4 +-
 .../Instrumented_DesignTime.codegen.cs        |  4 +-
 .../Instrumented_DesignTime.ir.txt            |  4 +-
 .../Instrumented_DesignTime.mappings.txt      | 42 ++++-----
 .../Instrumented_Runtime.codegen.cs           |  6 +-
 .../Instrumented_Runtime.ir.txt               |  4 +-
 .../MarkupInCodeBlock_DesignTime.codegen.cs   |  4 +-
 .../MarkupInCodeBlock_DesignTime.ir.txt       |  4 +-
 .../MarkupInCodeBlock_DesignTime.mappings.txt |  6 +-
 .../MarkupInCodeBlock_Runtime.codegen.cs      |  6 +-
 .../MarkupInCodeBlock_Runtime.ir.txt          |  4 +-
 ...eBlocksWithTagHelper_DesignTime.codegen.cs |  4 +-
 ...nCodeBlocksWithTagHelper_DesignTime.ir.txt |  4 +-
 ...locksWithTagHelper_DesignTime.mappings.txt | 28 +++---
 ...CodeBlocksWithTagHelper_Runtime.codegen.cs |  6 +-
 ...p_InCodeBlocksWithTagHelper_Runtime.ir.txt |  4 +-
 .../Markup_InCodeBlocks_DesignTime.codegen.cs |  4 +-
 .../Markup_InCodeBlocks_DesignTime.ir.txt     |  4 +-
 ...arkup_InCodeBlocks_DesignTime.mappings.txt | 26 +++---
 .../Markup_InCodeBlocks_Runtime.codegen.cs    |  6 +-
 .../Markup_InCodeBlocks_Runtime.ir.txt        |  4 +-
 .../MinimizedTagHelpers_DesignTime.codegen.cs |  4 +-
 .../MinimizedTagHelpers_DesignTime.ir.txt     |  4 +-
 ...inimizedTagHelpers_DesignTime.mappings.txt |  2 +-
 .../MinimizedTagHelpers_Runtime.codegen.cs    |  6 +-
 .../MinimizedTagHelpers_Runtime.ir.txt        |  4 +-
 .../NestedCSharp_DesignTime.codegen.cs        |  4 +-
 .../NestedCSharp_DesignTime.ir.txt            |  4 +-
 .../NestedCSharp_DesignTime.mappings.txt      | 10 +-
 .../NestedCSharp_Runtime.codegen.cs           |  6 +-
 .../NestedCSharp_Runtime.ir.txt               |  4 +-
 .../NestedCodeBlocks_DesignTime.codegen.cs    |  4 +-
 .../NestedCodeBlocks_DesignTime.ir.txt        |  4 +-
 .../NestedCodeBlocks_DesignTime.mappings.txt  |  6 +-
 .../NestedCodeBlocks_Runtime.codegen.cs       |  6 +-
 .../NestedCodeBlocks_Runtime.ir.txt           |  4 +-
 ...dScriptTagTagHelpers_DesignTime.codegen.cs |  4 +-
 ...estedScriptTagTagHelpers_DesignTime.ir.txt |  4 +-
 ...criptTagTagHelpers_DesignTime.mappings.txt | 10 +-
 ...stedScriptTagTagHelpers_Runtime.codegen.cs |  6 +-
 .../NestedScriptTagTagHelpers_Runtime.ir.txt  |  4 +-
 .../NestedTagHelpers_DesignTime.codegen.cs    |  4 +-
 .../NestedTagHelpers_DesignTime.ir.txt        |  4 +-
 .../NestedTagHelpers_DesignTime.mappings.txt  |  2 +-
 .../NestedTagHelpers_Runtime.codegen.cs       |  6 +-
 .../NestedTagHelpers_Runtime.ir.txt           |  4 +-
 .../NoLinePragmas_DesignTime.codegen.cs       |  4 +-
 .../NoLinePragmas_DesignTime.ir.txt           |  4 +-
 .../NoLinePragmas_DesignTime.mappings.txt     | 40 ++++----
 .../NoLinePragmas_Runtime.codegen.cs          |  6 +-
 .../NoLinePragmas_Runtime.ir.txt              |  4 +-
 ...nditionalExpressions_DesignTime.codegen.cs |  4 +-
 ...llConditionalExpressions_DesignTime.ir.txt |  4 +-
 ...itionalExpressions_DesignTime.mappings.txt | 26 +++---
 ...lConditionalExpressions_Runtime.codegen.cs |  6 +-
 .../NullConditionalExpressions_Runtime.ir.txt |  4 +-
 .../OpenedIf_DesignTime.codegen.cs            |  4 +-
 .../OpenedIf_DesignTime.ir.txt                |  4 +-
 .../OpenedIf_DesignTime.mappings.txt          |  6 +-
 .../OpenedIf_Runtime.codegen.cs               |  6 +-
 .../OpenedIf_Runtime.ir.txt                   |  4 +-
 .../ParserError_DesignTime.codegen.cs         |  4 +-
 .../ParserError_DesignTime.ir.txt             |  4 +-
 .../ParserError_DesignTime.mappings.txt       |  2 +-
 .../ParserError_Runtime.codegen.cs            |  6 +-
 .../ParserError_Runtime.ir.txt                |  4 +-
 ...dAttributeTagHelpers_DesignTime.codegen.cs |  4 +-
 ...fixedAttributeTagHelpers_DesignTime.ir.txt |  4 +-
 ...ttributeTagHelpers_DesignTime.mappings.txt | 24 ++---
 ...ixedAttributeTagHelpers_Runtime.codegen.cs |  6 +-
 ...PrefixedAttributeTagHelpers_Runtime.ir.txt |  4 +-
 .../RazorComments_DesignTime.codegen.cs       |  4 +-
 .../RazorComments_DesignTime.ir.txt           |  4 +-
 .../RazorComments_DesignTime.mappings.txt     | 14 +--
 .../RazorComments_Runtime.codegen.cs          |  6 +-
 .../RazorComments_Runtime.ir.txt              |  4 +-
 ...veTagHelperDirective_DesignTime.codegen.cs |  4 +-
 ...RemoveTagHelperDirective_DesignTime.ir.txt |  4 +-
 ...TagHelperDirective_DesignTime.mappings.txt |  2 +-
 ...emoveTagHelperDirective_Runtime.codegen.cs |  6 +-
 .../RemoveTagHelperDirective_Runtime.ir.txt   |  4 +-
 .../Sections_DesignTime.codegen.cs            |  4 +-
 .../Sections_DesignTime.ir.txt                |  4 +-
 .../Sections_DesignTime.mappings.txt          | 16 ++--
 .../Sections_Runtime.codegen.cs               |  6 +-
 .../Sections_Runtime.ir.txt                   |  4 +-
 .../SimpleTagHelpers_DesignTime.codegen.cs    |  4 +-
 .../SimpleTagHelpers_DesignTime.ir.txt        |  4 +-
 .../SimpleTagHelpers_DesignTime.mappings.txt  |  2 +-
 .../SimpleTagHelpers_Runtime.codegen.cs       |  6 +-
 .../SimpleTagHelpers_Runtime.ir.txt           |  4 +-
 .../SimpleUnspacedIf_DesignTime.codegen.cs    |  4 +-
 .../SimpleUnspacedIf_DesignTime.ir.txt        |  4 +-
 .../SimpleUnspacedIf_DesignTime.mappings.txt  |  4 +-
 .../SimpleUnspacedIf_Runtime.codegen.cs       |  6 +-
 .../SimpleUnspacedIf_Runtime.ir.txt           |  4 +-
 ...ontrolFlowStatements_DesignTime.codegen.cs |  4 +-
 ...ineControlFlowStatements_DesignTime.ir.txt |  4 +-
 ...trolFlowStatements_DesignTime.mappings.txt | 82 ++++++++---------
 ...neControlFlowStatements_Runtime.codegen.cs |  6 +-
 ...leLineControlFlowStatements_Runtime.ir.txt |  4 +-
 ...lineBeforeAttributes_DesignTime.codegen.cs |  4 +-
 ...hNewlineBeforeAttributes_DesignTime.ir.txt |  4 +-
 ...neBeforeAttributes_DesignTime.mappings.txt |  4 +-
 ...NewlineBeforeAttributes_Runtime.codegen.cs |  6 +-
 ...WithNewlineBeforeAttributes_Runtime.ir.txt |  4 +-
 .../SingleTagHelper_DesignTime.codegen.cs     |  4 +-
 .../SingleTagHelper_DesignTime.ir.txt         |  4 +-
 .../SingleTagHelper_DesignTime.mappings.txt   |  4 +-
 .../SingleTagHelper_Runtime.codegen.cs        |  6 +-
 .../SingleTagHelper_Runtime.ir.txt            |  4 +-
 .../StringLiterals_DesignTime.codegen.cs      |  4 +-
 .../StringLiterals_DesignTime.ir.txt          |  4 +-
 .../StringLiterals_DesignTime.mappings.txt    |  4 +-
 .../StringLiterals_Runtime.codegen.cs         |  6 +-
 .../StringLiterals_Runtime.ir.txt             |  4 +-
 ...ion_RecursivePattern_DesignTime.codegen.cs |  4 +-
 ...ression_RecursivePattern_DesignTime.ir.txt |  4 +-
 ...n_RecursivePattern_DesignTime.mappings.txt |  4 +-
 ...ession_RecursivePattern_Runtime.codegen.cs |  6 +-
 ...Expression_RecursivePattern_Runtime.ir.txt |  4 +-
 ...ymbolBoundAttributes_DesignTime.codegen.cs |  4 +-
 .../SymbolBoundAttributes_DesignTime.ir.txt   |  4 +-
 ...bolBoundAttributes_DesignTime.mappings.txt | 10 +-
 .../SymbolBoundAttributes_Runtime.codegen.cs  |  6 +-
 .../SymbolBoundAttributes_Runtime.ir.txt      |  4 +-
 .../TagHelpersInSection_DesignTime.codegen.cs |  4 +-
 .../TagHelpersInSection_DesignTime.ir.txt     |  4 +-
 ...agHelpersInSection_DesignTime.mappings.txt | 14 +--
 .../TagHelpersInSection_Runtime.codegen.cs    |  6 +-
 .../TagHelpersInSection_Runtime.ir.txt        |  4 +-
 ...sWithBoundAttributes_DesignTime.codegen.cs |  4 +-
 ...lpersWithBoundAttributes_DesignTime.ir.txt |  4 +-
 ...ithBoundAttributes_DesignTime.mappings.txt |  4 +-
 ...persWithBoundAttributes_Runtime.codegen.cs |  6 +-
 ...gHelpersWithBoundAttributes_Runtime.ir.txt |  4 +-
 ...thDataDashAttributes_DesignTime.codegen.cs |  4 +-
 ...rsWithDataDashAttributes_DesignTime.ir.txt |  4 +-
 ...DataDashAttributes_DesignTime.mappings.txt |  8 +-
 ...sWithDataDashAttributes_Runtime.codegen.cs |  6 +-
 ...lpersWithDataDashAttributes_Runtime.ir.txt |  4 +-
 ...TagHelpersWithPrefix_DesignTime.codegen.cs |  4 +-
 .../TagHelpersWithPrefix_DesignTime.ir.txt    |  4 +-
 ...gHelpersWithPrefix_DesignTime.mappings.txt |  6 +-
 .../TagHelpersWithPrefix_Runtime.codegen.cs   |  6 +-
 .../TagHelpersWithPrefix_Runtime.ir.txt       |  4 +-
 ...gHelpersWithTemplate_DesignTime.codegen.cs |  4 +-
 .../TagHelpersWithTemplate_DesignTime.ir.txt  |  4 +-
 ...elpersWithTemplate_DesignTime.mappings.txt | 10 +-
 .../TagHelpersWithTemplate_Runtime.codegen.cs |  6 +-
 .../TagHelpersWithTemplate_Runtime.ir.txt     |  4 +-
 ...rdlySpacedAttributes_DesignTime.codegen.cs |  4 +-
 ...hWeirdlySpacedAttributes_DesignTime.ir.txt |  4 +-
 ...lySpacedAttributes_DesignTime.mappings.txt |  8 +-
 ...WeirdlySpacedAttributes_Runtime.codegen.cs |  6 +-
 ...WithWeirdlySpacedAttributes_Runtime.ir.txt |  4 +-
 .../Tags_DesignTime.codegen.cs                |  4 +-
 .../Tags_DesignTime.ir.txt                    |  4 +-
 .../Tags_DesignTime.mappings.txt              |  6 +-
 .../Tags_Runtime.codegen.cs                   |  6 +-
 .../Tags_Runtime.ir.txt                       |  4 +-
 .../Templates_DesignTime.codegen.cs           |  4 +-
 .../Templates_DesignTime.ir.txt               |  4 +-
 .../Templates_DesignTime.mappings.txt         | 54 +++++------
 .../Templates_Runtime.codegen.cs              |  6 +-
 .../Templates_Runtime.ir.txt                  |  4 +-
 ...nTagHelperAttributes_DesignTime.codegen.cs |  4 +-
 ...onsInTagHelperAttributes_DesignTime.ir.txt |  4 +-
 ...agHelperAttributes_DesignTime.mappings.txt | 24 ++---
 ...nsInTagHelperAttributes_Runtime.codegen.cs |  6 +-
 ...itionsInTagHelperAttributes_Runtime.ir.txt |  4 +-
 ...shedExpressionInCode_DesignTime.codegen.cs |  4 +-
 ...finishedExpressionInCode_DesignTime.ir.txt |  4 +-
 ...edExpressionInCode_DesignTime.mappings.txt |  6 +-
 ...inishedExpressionInCode_Runtime.codegen.cs |  6 +-
 .../UnfinishedExpressionInCode_Runtime.ir.txt |  4 +-
 .../Usings_DesignTime.codegen.cs              |  4 +-
 .../Usings_DesignTime.ir.txt                  |  4 +-
 .../Usings_DesignTime.mappings.txt            | 18 ++--
 .../Usings_OutOfOrder_DesignTime.codegen.cs   |  4 +-
 .../Usings_OutOfOrder_DesignTime.ir.txt       |  4 +-
 .../Usings_OutOfOrder_DesignTime.mappings.txt | 26 +++---
 .../Usings_OutOfOrder_Runtime.codegen.cs      |  6 +-
 .../Usings_OutOfOrder_Runtime.ir.txt          |  4 +-
 .../Usings_Runtime.codegen.cs                 |  6 +-
 .../Usings_Runtime.ir.txt                     |  4 +-
 .../src/Language/RazorConfiguration.cs        |  4 +-
 .../DocumentSymbolEndpointTest.cs             |  2 +-
 572 files changed, 1780 insertions(+), 1780 deletions(-)

diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.codegen.cs
index 72ea10cfae3..3094fa0145d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -34,7 +34,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.ir.txt
index f74d046c984..42fe022cab0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [25] ) - global::System.Linq
@@ -14,7 +14,7 @@
             IntermediateToken - (11:0,11 [14] AttributeDirectiveWithViewImports.cshtml) - CSharp - [Serializable]
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.mappings.txt
index d4c610e7d5d..1122df5abb6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (11:0,11 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports.cshtml)
 |[Serializable]|
-Generated Location: (903:28,11 [14] )
+Generated Location: (920:28,11 [14] )
 |[Serializable]|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_Runtime.codegen.cs
index 1b6e023a63f..e8c12c22554 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "9a963ab17d89a7739e64cf5d94e1dc35aa41cf1004222067bca2328b832666d9"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System.Collections.Generic;
@@ -40,7 +40,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_Runtime.ir.txt
index 74fee171927..f6ea905d7be 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirectiveWithViewImports_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
         UsingDirective - (95:3,1 [38] ) - global::System.Threading.Tasks
@@ -16,7 +16,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirectiveWithViewImports - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.codegen.cs
index 4db1c047ed4..a50c79314f4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.ir.txt
index 7cb303a862a..3adfb0244ee 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.mappings.txt
index dae7e6e57f7..5648379bb4d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_DesignTime.mappings.txt
@@ -1,34 +1,34 @@
 Source Location: (13:0,13 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml)
 |this.ToString()|
-Generated Location: (1437:33,13 [15] )
+Generated Location: (1463:33,13 [15] )
 |this.ToString()|
 
 Source Location: (54:2,5 [29] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml)
 |string.Format("{0}", "Hello")|
-Generated Location: (1611:40,6 [29] )
+Generated Location: (1637:40,6 [29] )
 |string.Format("{0}", "Hello")|
 
 Source Location: (95:4,2 [25] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml)
 | 
     var cls = "foo";
 |
-Generated Location: (1795:47,2 [25] )
+Generated Location: (1821:47,2 [25] )
 | 
     var cls = "foo";
 |
 
 Source Location: (134:7,11 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml)
 |if(cls != null) { |
-Generated Location: (1981:55,11 [18] )
+Generated Location: (2007:55,11 [18] )
 |if(cls != null) { |
 
 Source Location: (153:7,30 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml)
 |cls|
-Generated Location: (2181:62,30 [3] )
+Generated Location: (2207:62,30 [3] )
 |cls|
 
 Source Location: (156:7,33 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml)
 | }|
-Generated Location: (2370:69,33 [2] )
+Generated Location: (2396:69,33 [2] )
 | }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_Runtime.codegen.cs
index 3d2e93a3ba8..6b3e145e2c7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "3b732a30f94dc763cbd74d150cca70825dbddec2bddfba4e4d82547d5ced9a82"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_Runtime.ir.txt
index 56e9bc2e1c6..bb2dfe4d57f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Basic_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Basic - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [4] Basic.cshtml)
                     LazyIntermediateToken - (0:0,0 [4] Basic.cshtml) - Html - <div
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.codegen.cs
index e704fde2fd6..501a793e2b1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.ir.txt
index 61e677a4eb7..8a46de8392f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.mappings.txt
index 68b99fa9b03..fc357d92584 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.mappings.txt
@@ -1,35 +1,35 @@
 Source Location: (128:7,7 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (1204:26,0 [0] )
+Generated Location: (1230:26,0 [0] )
 ||
 
 Source Location: (149:10,8 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (1441:36,0 [0] )
+Generated Location: (1467:36,0 [0] )
 ||
 
 Source Location: (159:11,8 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 |MyService<TModel>|
-Generated Location: (1678:46,0 [17] )
+Generated Location: (1704:46,0 [17] )
 |MyService<TModel>|
 
 Source Location: (203:14,11 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (1956:56,0 [0] )
+Generated Location: (1982:56,0 [0] )
 ||
 
 Source Location: (119:6,6 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (2454:73,6 [0] )
+Generated Location: (2480:73,6 [0] )
 ||
 
 Source Location: (139:9,7 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (2629:80,7 [0] )
+Generated Location: (2655:80,7 [0] )
 ||
 
 Source Location: (190:13,10 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (2807:87,10 [0] )
+Generated Location: (2833:87,10 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.codegen.cs
index 641f07ac3e4..3732d035246 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "7afd23f4d24de7b2bec1fb06d0a708e2d98adee36c510f65d3424dfda5445dca"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.ir.txt
index 11e2588b30a..6af247f7569 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (85:1,0 [2] IncompleteDirectives.cshtml)
                     LazyIntermediateToken - (85:1,0 [2] IncompleteDirectives.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.codegen.cs
index e97b456f33a..7bcc7e4db5d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel : MyBasePageForViews<MyModel>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel : MyBasePageForViews<MyModel>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.ir.txt
index 33b5e760949..53cd7044111 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel - MyBasePageForViews<MyModel> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel - MyBasePageForViews<MyModel> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.mappings.txt
index 49ab8159e50..23d8691b5e8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (10:0,10 [26] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel.cshtml)
 |MyBasePageForViews<TModel>|
-Generated Location: (1174:26,0 [26] )
+Generated Location: (1200:26,0 [26] )
 |MyBasePageForViews<TModel>|
 
 Source Location: (45:1,7 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel.cshtml)
 |MyModel|
-Generated Location: (1457:36,0 [7] )
+Generated Location: (1483:36,0 [7] )
 |MyModel|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_Runtime.codegen.cs
index 158b2dc8916..7d5e59cc7ec 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "1ca5ae8e569aefa6575a68e8d8b2d375ed79deec6565fb893b72b89423f55abd"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel : MyBasePageForViews<MyModel>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel : MyBasePageForViews<MyModel>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_Runtime.ir.txt
index 6a2103779ca..a87252108ee 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsViewModel_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel - MyBasePageForViews<MyModel> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsViewModel - MyBasePageForViews<MyModel> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.codegen.cs
index 2797f550402..c288744ec5a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports : MyPageModel<MyModel>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports : MyPageModel<MyModel>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.ir.txt
index 02331d9ea15..1abea22138a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports - MyPageModel<MyModel> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports - MyPageModel<MyModel> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.mappings.txt
index ad901af4382..eb4779efcf4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (14:1,7 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports.cshtml)
 |MyModel|
-Generated Location: (1185:26,0 [7] )
+Generated Location: (1211:26,0 [7] )
 |MyModel|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_Runtime.codegen.cs
index 68eeb760030..2615dac991c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a652fac42d6a27ace9b45de079bd1bd21d47f29255b96899785aaa55a4a8e354"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -19,7 +19,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports : MyPageModel<MyModel>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports : MyPageModel<MyModel>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_Runtime.ir.txt
index 80d7c75bf5d..78ebbebbdb6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InheritsWithViewImports_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports - MyPageModel<MyModel> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InheritsWithViewImports - MyPageModel<MyModel> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.codegen.cs
index c522f09d73f..507fdf59594 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.ir.txt
index 333382ac822..64e0602a5c2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.mappings.txt
index 2aef24850cd..ead29c02167 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_DesignTime.mappings.txt
@@ -1,25 +1,25 @@
 Source Location: (7:0,7 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml)
 |MyModel|
-Generated Location: (1198:26,0 [7] )
+Generated Location: (1224:26,0 [7] )
 |MyModel|
 
 Source Location: (24:1,8 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml)
 |MyApp|
-Generated Location: (1460:36,0 [5] )
+Generated Location: (1486:36,0 [5] )
 |MyApp|
 
 Source Location: (30:1,14 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml)
 |MyPropertyName|
-Generated Location: (1742:46,22 [14] )
+Generated Location: (1768:46,22 [14] )
 |MyPropertyName|
 
 Source Location: (54:2,8 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml)
 |MyService<TModel>|
-Generated Location: (1995:56,0 [17] )
+Generated Location: (2021:56,0 [17] )
 |MyService<TModel>|
 
 Source Location: (72:2,26 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml)
 |Html|
-Generated Location: (2289:66,22 [4] )
+Generated Location: (2315:66,22 [4] )
 |Html|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.codegen.cs
index 0b56e2be1e9..be636240d3d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "319d5fa6f848e64d19bf7eab2f5e3339cdfc75b02a9bc6f2773eed1a40f5e9d0"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.ir.txt
index ea79180b0e6..f3c7bb47cc6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithModel - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.mappings.txt
index 74596acbc18..a8d413833d9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel_Runtime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (54:2,8 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml)
 |MyService|
-Generated Location: (2037:32,0 [9] )
+Generated Location: (2080:32,0 [9] )
 |MyService|
 
 Source Location: (72:2,26 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml)
 |Html|
-Generated Location: (2240:40,0 [4] )
+Generated Location: (2283:40,0 [4] )
 |Html|
 
 Source Location: (24:1,8 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml)
 |MyApp|
-Generated Location: (2568:51,0 [5] )
+Generated Location: (2611:51,0 [5] )
 |MyApp|
 
 Source Location: (30:1,14 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithModel.cshtml)
 |MyPropertyName|
-Generated Location: (2758:59,0 [14] )
+Generated Location: (2801:59,0 [14] )
 |MyPropertyName|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.codegen.cs
index 0a785bf0448..325edc73996 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.ir.txt
index 8cecee2bc1a..82b67dbaac8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.mappings.txt
index 296b4548b4e..cb492a0fcca 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_DesignTime.mappings.txt
@@ -1,45 +1,45 @@
 Source Location: (7:0,7 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyModel|
-Generated Location: (1210:26,0 [7] )
+Generated Location: (1236:26,0 [7] )
 |MyModel|
 
 Source Location: (24:1,8 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyApp|
-Generated Location: (1476:36,0 [5] )
+Generated Location: (1502:36,0 [5] )
 |MyApp|
 
 Source Location: (30:1,14 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyPropertyName|
-Generated Location: (1762:46,22 [14] )
+Generated Location: (1788:46,22 [14] )
 |MyPropertyName|
 
 Source Location: (58:2,8 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyService<TModel>|
-Generated Location: (2019:56,0 [17] )
+Generated Location: (2045:56,0 [17] )
 |MyService<TModel>|
 
 Source Location: (76:2,26 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |Html|
-Generated Location: (2317:66,22 [4] )
+Generated Location: (2343:66,22 [4] )
 |Html|
 
 Source Location: (93:3,8 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyApp|
-Generated Location: (2564:76,0 [5] )
+Generated Location: (2590:76,0 [5] )
 |MyApp|
 
 Source Location: (99:3,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyPropertyName2|
-Generated Location: (2850:86,22 [15] )
+Generated Location: (2876:86,22 [15] )
 |MyPropertyName2|
 
 Source Location: (129:4,8 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyService<TModel>|
-Generated Location: (3108:96,0 [17] )
+Generated Location: (3134:96,0 [17] )
 |MyService<TModel>|
 
 Source Location: (147:4,26 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |Html2|
-Generated Location: (3406:106,22 [5] )
+Generated Location: (3432:106,22 [5] )
 |Html2|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.codegen.cs
index 8a9e54e83ec..26d47a76b27 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "771acb56660727ab6e4ca50e95bde0cf2a72af8de3e9ec1cd4b72969645cb9af"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.ir.txt
index bde5ff49094..a22e7329218 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InjectWithSemicolon - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<MyModel> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.mappings.txt
index 8bdc56783f5..56b60c17d77 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon_Runtime.mappings.txt
@@ -1,40 +1,40 @@
 Source Location: (129:4,8 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyService|
-Generated Location: (2065:32,0 [9] )
+Generated Location: (2108:32,0 [9] )
 |MyService|
 
 Source Location: (147:4,26 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |Html2|
-Generated Location: (2272:40,0 [5] )
+Generated Location: (2315:40,0 [5] )
 |Html2|
 
 Source Location: (93:3,8 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyApp|
-Generated Location: (2605:51,0 [5] )
+Generated Location: (2648:51,0 [5] )
 |MyApp|
 
 Source Location: (99:3,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyPropertyName2|
-Generated Location: (2799:59,0 [15] )
+Generated Location: (2842:59,0 [15] )
 |MyPropertyName2|
 
 Source Location: (58:2,8 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyService|
-Generated Location: (3142:70,0 [9] )
+Generated Location: (3185:70,0 [9] )
 |MyService|
 
 Source Location: (76:2,26 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |Html|
-Generated Location: (3349:78,0 [4] )
+Generated Location: (3392:78,0 [4] )
 |Html|
 
 Source Location: (24:1,8 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyApp|
-Generated Location: (3681:89,0 [5] )
+Generated Location: (3724:89,0 [5] )
 |MyApp|
 
 Source Location: (30:1,14 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InjectWithSemicolon.cshtml)
 |MyPropertyName|
-Generated Location: (3875:97,0 [14] )
+Generated Location: (3918:97,0 [14] )
 |MyPropertyName|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.codegen.cs
index 6b3b1d6fe0a..95b744435dd 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.ir.txt
index 9ddf119a56e..94f6f2ad15b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.mappings.txt
index c6395a4a74a..4e939233544 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (8:0,8 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject.cshtml)
 |MyApp|
-Generated Location: (1171:26,0 [5] )
+Generated Location: (1197:26,0 [5] )
 |MyApp|
 
 Source Location: (14:0,14 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject.cshtml)
 |MyPropertyName|
-Generated Location: (1444:36,22 [14] )
+Generated Location: (1470:36,22 [14] )
 |MyPropertyName|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.codegen.cs
index 2aac70d02e7..96e2a2f1399 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "f0ec78e6ab6def57bd9067e564edaa84059a8ecb9a3c1766a148a7df3096b7b0"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.ir.txt
index 847d8453977..cdcb7fbec97 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inject - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.mappings.txt
index 1922c8947a9..d8c4bcd952e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject_Runtime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (8:0,8 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject.cshtml)
 |MyApp|
-Generated Location: (1974:32,0 [5] )
+Generated Location: (2017:32,0 [5] )
 |MyApp|
 
 Source Location: (14:0,14 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inject.cshtml)
 |MyPropertyName|
-Generated Location: (2155:40,0 [14] )
+Generated Location: (2198:40,0 [14] )
 |MyPropertyName|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_DesignTime.codegen.cs
index a8ea985c411..f6e3da8b232 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_DesignTime.ir.txt
index ebfd3e3876e..2fb419b34aa 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_Runtime.codegen.cs
index ac456620445..e698918c05c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "3b8355e6c17c9dc5d6062d64a789a8b5a81db5adec1e9913ff7a7c1565682765"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_Runtime.ir.txt
index 0ecb4011503..d01e12f9994 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InvalidNamespaceAtEOF_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InvalidNamespaceAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 MalformedDirective - (0:0,0 [11] InvalidNamespaceAtEOF.cshtml) - namespace
                 HtmlContent - (11:0,11 [5] InvalidNamespaceAtEOF.cshtml)
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_DesignTime.codegen.cs
index c1d814c2471..17e66eaa399 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_DesignTime.ir.txt
index 9512f8a1070..2ee3e356b92 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_Runtime.codegen.cs
index c9689a971e2..1fd1127e0d6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "189450bf29773af1b743c49fb8b24230b292c19db0334d587f0e094856e5218f"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_Runtime.ir.txt
index fa1d7b2efe5..2ca6219b5d3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MalformedPageDirective_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MalformedPageDirective - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 MalformedDirective - (0:0,0 [6] MalformedPageDirective.cshtml) - page
                 HtmlContent - (6:0,6 [49] MalformedPageDirective.cshtml)
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.codegen.cs
index d87a23e0538..3bf6b202b36 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.ir.txt
index 433f38b5a28..008decced62 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTestTagHelper - __InputTestTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.mappings.txt
index 9e03dac2d9d..a80f0177844 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (7:0,7 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper.cshtml)
 |DateTime|
-Generated Location: (1700:32,0 [8] )
+Generated Location: (1726:32,0 [8] )
 |DateTime|
 
 Source Location: (33:2,14 [29] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper.cshtml)
 |"InputTestTagHelper, AppCode"|
-Generated Location: (2009:42,37 [29] )
+Generated Location: (2035:42,37 [29] )
 |"InputTestTagHelper, AppCode"|
 
 Source Location: (83:4,17 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper.cshtml)
 |Date|
-Generated Location: (2719:60,102 [4] )
+Generated Location: (2745:60,102 [4] )
 |Date|
 
 Source Location: (111:5,18 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper.cshtml)
 |Model|
-Generated Location: (3149:69,94 [5] )
+Generated Location: (3175:69,94 [5] )
 |Model|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_Runtime.codegen.cs
index 737f6dc2ace..6fc3952dab6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "b96e944bd86a2acecd5a176708eedb3cdc8eef05122fd51aa5c4fe58d4069af7"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_Runtime.ir.txt
index f83f43c30c1..184efec4d89 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ModelExpressionTagHelper_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ModelExpressionTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTestTagHelper - __InputTestTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.codegen.cs
index 2c3a262eed2..8a984eb787c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<System.Collections.IEnumerable>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<System.Collections.IEnumerable>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.ir.txt
index c7b21ddcf3b..f486553c060 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<System.Collections.IEnumerable> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<System.Collections.IEnumerable> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.mappings.txt
index 7394637419a..bb47d519adf 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (7:0,7 [30] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model.cshtml)
 |System.Collections.IEnumerable|
-Generated Location: (1191:26,0 [30] )
+Generated Location: (1217:26,0 [30] )
 |System.Collections.IEnumerable|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_Runtime.codegen.cs
index 9fd9006a420..e789c5db091 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "36b79708f36f3606c2eb7c7eaf383853df55ab030280d5deb8f762fac54fd1c0"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<System.Collections.IEnumerable>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<System.Collections.IEnumerable>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_Runtime.ir.txt
index 2334402e431..2edaa113a45 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Model_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<System.Collections.IEnumerable> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Model - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<System.Collections.IEnumerable> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.codegen.cs
index 74a617a6104..5d852cb1555 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MultipleModels : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<ThisShouldBeGenerated>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MultipleModels : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<ThisShouldBeGenerated>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.ir.txt
index a7e32184d01..211de3d9ff0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MultipleModels - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<ThisShouldBeGenerated> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MultipleModels - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<ThisShouldBeGenerated> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.mappings.txt
index 20d5397ea6c..71c30fcdb10 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (7:0,7 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels.cshtml)
 |ThisShouldBeGenerated|
-Generated Location: (1209:26,0 [21] )
+Generated Location: (1235:26,0 [21] )
 |ThisShouldBeGenerated|
 
 Source Location: (37:1,7 [30] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MultipleModels.cshtml)
 |System.Collections.IEnumerable|
-Generated Location: (1484:36,0 [30] )
+Generated Location: (1510:36,0 [30] )
 |System.Collections.IEnumerable|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.codegen.cs
index 6c494c79c74..f81e5637974 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.codegen.cs
@@ -16,7 +16,7 @@ namespace Test.Namespace
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PageWithNamespace : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PageWithNamespace : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.ir.txt
index b8bd6238d8c..ed9a464951c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.ir.txt
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PageWithNamespace - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PageWithNamespace - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.mappings.txt
index 89f6b504abe..6ddb439deb4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (18:1,11 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace.cshtml)
 |Test.Namespace|
-Generated Location: (1243:26,44 [14] )
+Generated Location: (1252:26,44 [14] )
 |Test.Namespace|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_Runtime.codegen.cs
index 88fcd2f08a3..60084b62428 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_Runtime.codegen.cs
@@ -18,7 +18,7 @@ namespace Test.Namespace
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PageWithNamespace : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PageWithNamespace : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_Runtime.ir.txt
index 6fa07da4f1c..31ab344447d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PageWithNamespace_Runtime.ir.txt
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PageWithNamespace - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PageWithNamespace - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (34:2,0 [20] PageWithNamespace.cshtml)
                     LazyIntermediateToken - (34:2,0 [3] PageWithNamespace.cshtml) - Html - <h1
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_DesignTime.codegen.cs
index 7f4e5ee494a..3af82f72b20 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_DesignTime.ir.txt
index 4982f6e4002..cae87bb1f87 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_Runtime.codegen.cs
index 2732e3630be..d842ee826ae 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "5eaf8fb8900db86500f29c357a6119d29d8639ae7b054b4cc5e00bbdf4882c2d"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_Runtime.ir.txt
index e45af51cdc0..346b2f28937 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPageWithNoLeadingPageDirective_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPageWithNoLeadingPageDirective - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [28] RazorPageWithNoLeadingPageDirective.cshtml)
                     LazyIntermediateToken - (0:0,0 [4] RazorPageWithNoLeadingPageDirective.cshtml) - Html - <div
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithCssScope.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithCssScope.codegen.cs
index 67004f5a5e1..c835bbfce8b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithCssScope.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithCssScope.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "277fbcbf5d1dfc2066aea1070e6dd8b1890ff5da41edddab19b860e37725bd8a"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("Bar", "Foo", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithCssScope.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithCssScope.ir.txt
index 9f0866f81cf..661ce844d18 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithCssScope.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithCssScope.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - Bar - Foo - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - asp-route - register - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - method - post - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.codegen.cs
index 1a6c001424e..5b240502e36 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -21,7 +21,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.ir.txt
index 42c3c1e4cd8..e87172ba9ca 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -11,7 +11,7 @@
         UsingDirective - (8:1,1 [19] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - TestNamespace
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.mappings.txt
index aea33d2ab95..e9450d8ef26 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (8:1,1 [19] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |using TestNamespace|
-Generated Location: (545:15,0 [19] )
+Generated Location: (562:15,0 [19] )
 |using TestNamespace|
 
 Source Location: (36:2,7 [9] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |TestModel|
-Generated Location: (1290:31,0 [9] )
+Generated Location: (1316:31,0 [9] )
 |TestModel|
 
 Source Location: (54:4,5 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model.Name|
-Generated Location: (1805:48,6 [10] )
+Generated Location: (1831:48,6 [10] )
 |Model.Name|
 
 Source Location: (78:6,5 [14] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model?.Address|
-Generated Location: (1973:55,6 [14] )
+Generated Location: (1999:55,6 [14] )
 |Model?.Address|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.codegen.cs
index 52d2439f36d..3343a1a9015 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "938aa77e05d0524687967a4964c7424054e2f7b837772fe19895341aa7ef5bda"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.ir.txt
index 5179d0b1e19..8efd1b0b509 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (47:3,0 [6] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
                     LazyIntermediateToken - (47:3,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.mappings.txt
index b1ede97e6be..193db25f87d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangNew_Runtime.mappings.txt
@@ -1,17 +1,17 @@
 Source Location: (8:1,1 [21] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |using TestNamespace
 |
-Generated Location: (971:16,0 [21] )
+Generated Location: (1005:16,0 [21] )
 |using TestNamespace
 |
 
 Source Location: (54:4,5 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model.Name|
-Generated Location: (2020:36,0 [10] )
+Generated Location: (2063:36,0 [10] )
 |Model.Name|
 
 Source Location: (78:6,5 [14] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model?.Address|
-Generated Location: (2276:46,0 [14] )
+Generated Location: (2319:46,0 [14] )
 |Model?.Address|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.codegen.cs
index 74b01482d43..70d2d84399c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -21,7 +21,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.ir.txt
index 63b5fb776d7..33c19ce8797 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -11,7 +11,7 @@
         UsingDirective - (8:1,1 [19] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - TestNamespace
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.mappings.txt
index aea33d2ab95..e9450d8ef26 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (8:1,1 [19] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |using TestNamespace|
-Generated Location: (545:15,0 [19] )
+Generated Location: (562:15,0 [19] )
 |using TestNamespace|
 
 Source Location: (36:2,7 [9] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |TestModel|
-Generated Location: (1290:31,0 [9] )
+Generated Location: (1316:31,0 [9] )
 |TestModel|
 
 Source Location: (54:4,5 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model.Name|
-Generated Location: (1805:48,6 [10] )
+Generated Location: (1831:48,6 [10] )
 |Model.Name|
 
 Source Location: (78:6,5 [14] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model?.Address|
-Generated Location: (1973:55,6 [14] )
+Generated Location: (1999:55,6 [14] )
 |Model?.Address|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.codegen.cs
index 60fb805e412..5660607b01a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "938aa77e05d0524687967a4964c7424054e2f7b837772fe19895341aa7ef5bda"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.ir.txt
index eaf0f2f9770..f937ddd5ef3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (47:3,0 [6] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
                     LazyIntermediateToken - (47:3,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.mappings.txt
index b1ede97e6be..193db25f87d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNonNullableModel_LangOld_Runtime.mappings.txt
@@ -1,17 +1,17 @@
 Source Location: (8:1,1 [21] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |using TestNamespace
 |
-Generated Location: (971:16,0 [21] )
+Generated Location: (1005:16,0 [21] )
 |using TestNamespace
 |
 
 Source Location: (54:4,5 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model.Name|
-Generated Location: (2020:36,0 [10] )
+Generated Location: (2063:36,0 [10] )
 |Model.Name|
 
 Source Location: (78:6,5 [14] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model?.Address|
-Generated Location: (2276:46,0 [14] )
+Generated Location: (2319:46,0 [14] )
 |Model?.Address|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.codegen.cs
index 56e4cec6181..a0592546ba4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -21,7 +21,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.ir.txt
index b13cccfd3eb..caecaef2084 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -11,7 +11,7 @@
         UsingDirective - (8:1,1 [19] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - TestNamespace
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.mappings.txt
index 4ab42af6467..580d99371c0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (8:1,1 [19] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |using TestNamespace|
-Generated Location: (545:15,0 [19] )
+Generated Location: (562:15,0 [19] )
 |using TestNamespace|
 
 Source Location: (36:2,7 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |TestModel?|
-Generated Location: (1290:31,0 [10] )
+Generated Location: (1316:31,0 [10] )
 |TestModel?|
 
 Source Location: (55:4,5 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model.Name|
-Generated Location: (1806:48,6 [10] )
+Generated Location: (1832:48,6 [10] )
 |Model.Name|
 
 Source Location: (79:6,5 [14] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model?.Address|
-Generated Location: (1974:55,6 [14] )
+Generated Location: (2000:55,6 [14] )
 |Model?.Address|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.codegen.cs
index c743e8ac9c4..68a1f75cf5f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a0b3df03ac7b0b582a2924ed8f2f85f3df8f906c37a1aa7f1f8255290fbf29a9"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.ir.txt
index 1f0b68a5737..1c026c0aef5 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (48:3,0 [6] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
                     LazyIntermediateToken - (48:3,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.mappings.txt
index a2df4b7677c..544865bd281 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangNew_Runtime.mappings.txt
@@ -1,17 +1,17 @@
 Source Location: (8:1,1 [21] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |using TestNamespace
 |
-Generated Location: (971:16,0 [21] )
+Generated Location: (1005:16,0 [21] )
 |using TestNamespace
 |
 
 Source Location: (55:4,5 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model.Name|
-Generated Location: (2020:36,0 [10] )
+Generated Location: (2063:36,0 [10] )
 |Model.Name|
 
 Source Location: (79:6,5 [14] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model?.Address|
-Generated Location: (2276:46,0 [14] )
+Generated Location: (2319:46,0 [14] )
 |Model?.Address|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.codegen.cs
index 7c147f6f243..fa4833099f7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -21,7 +21,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.ir.txt
index 70413ed61f7..d6dfdd62fd1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -11,7 +11,7 @@
         UsingDirective - (8:1,1 [19] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - TestNamespace
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.mappings.txt
index 4ab42af6467..580d99371c0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (8:1,1 [19] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |using TestNamespace|
-Generated Location: (545:15,0 [19] )
+Generated Location: (562:15,0 [19] )
 |using TestNamespace|
 
 Source Location: (36:2,7 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |TestModel?|
-Generated Location: (1290:31,0 [10] )
+Generated Location: (1316:31,0 [10] )
 |TestModel?|
 
 Source Location: (55:4,5 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model.Name|
-Generated Location: (1806:48,6 [10] )
+Generated Location: (1832:48,6 [10] )
 |Model.Name|
 
 Source Location: (79:6,5 [14] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model?.Address|
-Generated Location: (1974:55,6 [14] )
+Generated Location: (2000:55,6 [14] )
 |Model?.Address|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.codegen.cs
index eadcffb5342..cc5ef0e825e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a0b3df03ac7b0b582a2924ed8f2f85f3df8f906c37a1aa7f1f8255290fbf29a9"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.ir.txt
index dc30fcf3e66..7a00e428f85 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (48:3,0 [6] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
                     LazyIntermediateToken - (48:3,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.mappings.txt
index a2df4b7677c..544865bd281 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPage_WithNullableModel_LangOld_Runtime.mappings.txt
@@ -1,17 +1,17 @@
 Source Location: (8:1,1 [21] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |using TestNamespace
 |
-Generated Location: (971:16,0 [21] )
+Generated Location: (1005:16,0 [21] )
 |using TestNamespace
 |
 
 Source Location: (55:4,5 [10] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model.Name|
-Generated Location: (2020:36,0 [10] )
+Generated Location: (2063:36,0 [10] )
 |Model.Name|
 
 Source Location: (79:6,5 [14] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
 |Model?.Address|
-Generated Location: (2276:46,0 [14] )
+Generated Location: (2319:46,0 [14] )
 |Model?.Address|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.codegen.cs
index 6d226f0fd46..2984cf4987b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -22,7 +22,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.ir.txt
index dd03351f6cb..5350ef031e8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -12,7 +12,7 @@
         RazorCompiledItemMetadataAttribute - (6:0,6 [8] RazorPagesWithRouteTemplate.cshtml)
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.mappings.txt
index f350890e212..eb719e203ff 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_DesignTime.mappings.txt
@@ -1,21 +1,21 @@
 Source Location: (36:3,1 [41] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml)
 |using Microsoft.AspNetCore.Mvc.RazorPages|
-Generated Location: (568:15,0 [41] )
+Generated Location: (585:15,0 [41] )
 |using Microsoft.AspNetCore.Mvc.RazorPages|
 
 Source Location: (6:0,6 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml)
 |"/About"|
-Generated Location: (1572:33,37 [8] )
+Generated Location: (1598:33,37 [8] )
 |"/About"|
 
 Source Location: (25:2,7 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml)
 |NewModel|
-Generated Location: (1823:43,0 [8] )
+Generated Location: (1849:43,0 [8] )
 |NewModel|
 
 Source Location: (213:12,18 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml)
 |Model.Name|
-Generated Location: (2373:60,18 [10] )
+Generated Location: (2399:60,18 [10] )
 |Model.Name|
 
 Source Location: (93:5,12 [97] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml)
@@ -25,7 +25,7 @@ Source Location: (93:5,12 [97] TestFiles/IntegrationTests/CodeGenerationIntegrat
         public string Name { get; set; }
     }
 |
-Generated Location: (2619:69,12 [97] )
+Generated Location: (2645:69,12 [97] )
 |
     public class NewModel : PageModel
     {
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_Runtime.codegen.cs
index 26803a7ec1d..a0be33e7420 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "da9a31551104c58f287a17de26f4a3aa316e7e17fb9ed06e39692c4f45fb133a"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -34,7 +34,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_Runtime.ir.txt
index 54fb257212b..1ffae76587e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithRouteTemplate_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -13,7 +13,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithRouteTemplate - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (16:1,0 [2] RazorPagesWithRouteTemplate.cshtml)
                     LazyIntermediateToken - (16:1,0 [2] RazorPagesWithRouteTemplate.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.codegen.cs
index c4fa3465aee..2d7527b1211 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -21,7 +21,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.ir.txt
index eec7011d9bb..50cd6d68233 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -11,7 +11,7 @@
         UsingDirective - (38:3,1 [41] RazorPagesWithoutModel.cshtml) - Microsoft.AspNetCore.Mvc.RazorPages
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::DivTagHelper - __DivTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.mappings.txt
index e335c60c42a..139ede15cf8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_DesignTime.mappings.txt
@@ -1,16 +1,16 @@
 Source Location: (38:3,1 [41] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel.cshtml)
 |using Microsoft.AspNetCore.Mvc.RazorPages|
-Generated Location: (563:15,0 [41] )
+Generated Location: (580:15,0 [41] )
 |using Microsoft.AspNetCore.Mvc.RazorPages|
 
 Source Location: (23:2,14 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel.cshtml)
 |"*, AppCode"|
-Generated Location: (1902:38,37 [12] )
+Generated Location: (1928:38,37 [12] )
 |"*, AppCode"|
 
 Source Location: (566:24,47 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel.cshtml)
 |Name|
-Generated Location: (2603:57,47 [4] )
+Generated Location: (2629:57,47 [4] )
 |Name|
 
 Source Location: (95:5,12 [283] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel.cshtml)
@@ -28,7 +28,7 @@ Source Location: (95:5,12 [283] TestFiles/IntegrationTests/CodeGenerationIntegra
         public string Name { get; set; }
     }
 |
-Generated Location: (3426:74,12 [283] )
+Generated Location: (3452:74,12 [283] )
 |
     public IActionResult OnPost(Customer customer)
     {
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_Runtime.codegen.cs
index 22f235cc89d..b31ece9290d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "4d4352438ec54cff935ed10c73f4fb4ce0ea8ffc7c46b467007618dead77f960"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("class", new global::Microsoft.AspNetCore.Html.HtmlString("text-danger"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_Runtime.ir.txt
index e3d717690e5..8b1129000fc 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPagesWithoutModel_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPagesWithoutModel - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - class - text-danger - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - class - col-md-10 - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - class - form-group - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.codegen.cs
index a7e228168eb..34f4321738d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -21,7 +21,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.ir.txt
index 0395753efcf..b60fec33036 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -11,7 +11,7 @@
         UsingDirective - (55:4,1 [41] RazorPages.cshtml) - Microsoft.AspNetCore.Mvc.RazorPages
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::DivTagHelper - __DivTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.mappings.txt
index 6d58723a403..461dfa9e38b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_DesignTime.mappings.txt
@@ -1,21 +1,21 @@
 Source Location: (55:4,1 [41] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml)
 |using Microsoft.AspNetCore.Mvc.RazorPages|
-Generated Location: (551:15,0 [41] )
+Generated Location: (568:15,0 [41] )
 |using Microsoft.AspNetCore.Mvc.RazorPages|
 
 Source Location: (16:2,7 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml)
 |NewModel|
-Generated Location: (1798:37,0 [8] )
+Generated Location: (1824:37,0 [8] )
 |NewModel|
 
 Source Location: (40:3,14 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml)
 |"*, AppCode"|
-Generated Location: (2112:48,37 [12] )
+Generated Location: (2138:48,37 [12] )
 |"*, AppCode"|
 
 Source Location: (661:28,47 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml)
 |Model.Name|
-Generated Location: (2801:67,47 [10] )
+Generated Location: (2827:67,47 [10] )
 |Model.Name|
 
 Source Location: (112:6,12 [360] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml)
@@ -36,7 +36,7 @@ Source Location: (112:6,12 [360] TestFiles/IntegrationTests/CodeGenerationIntegr
         public string Name { get; set; }
     }
 |
-Generated Location: (3618:84,12 [360] )
+Generated Location: (3644:84,12 [360] )
 |
     public class NewModel : PageModel
     {
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_Runtime.codegen.cs
index a029a343a45..e6a034a4616 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "676265931c358e22efce0fe9ebd76cc3a7d2a5c12d37384e13aec92aa7667663"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages), @"mvc.1.0.razor-page", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages : global::Microsoft.AspNetCore.Mvc.RazorPages.Page
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("class", new global::Microsoft.AspNetCore.Html.HtmlString("text-danger"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_Runtime.ir.txt
index 711a257e33e..983fbd7f38b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorPages_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorPages - global::Microsoft.AspNetCore.Mvc.RazorPages.Page - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - class - text-danger - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - class - col-md-10 - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - class - form-group - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_Layout_WithCssScope.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_Layout_WithCssScope.codegen.cs
index 6b5942c13ae..8d5327bb7b4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_Layout_WithCssScope.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_Layout_WithCssScope.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "ae0459eafa91f6ae24fb2b349577f0dfb20a0e269a8a48888a1285a725191322"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_Layout_WithCssScope.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_Layout_WithCssScope.ir.txt
index da0ffc7897f..181bccc7705 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_Layout_WithCssScope.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_Layout_WithCssScope.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [164] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
                     LazyIntermediateToken - (0:0,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithCssScope.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithCssScope.codegen.cs
index cd3b23a0f11..f7d7de1bfbf 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithCssScope.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithCssScope.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "693e482257fa9ef37bc202b83d2bd2e6f8475e8f4d328f07e18a689f4f68c917"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("Bar", "Foo", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithCssScope.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithCssScope.ir.txt
index c17f79100e0..e9a136bd4b2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithCssScope.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithCssScope.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - Bar - Foo - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - asp-route - register - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - method - post - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNonNullableModel_NullableContextEnabled.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNonNullableModel_NullableContextEnabled.codegen.cs
index 6b9da69c452..a83bb4b85aa 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNonNullableModel_NullableContextEnabled.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNonNullableModel_NullableContextEnabled.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "d0420b910fa2a6f0119a96ffb534fee225ca66e96b3b1741cf04c7ebd9525f62"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNonNullableModel_NullableContextEnabled.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNonNullableModel_NullableContextEnabled.ir.txt
index 5368db952de..36bc7b80611 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNonNullableModel_NullableContextEnabled.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNonNullableModel_NullableContextEnabled.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
                     LazyIntermediateToken - (0:0,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableBaseType_NullableContexEnabled.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableBaseType_NullableContexEnabled.codegen.cs
index e7eb993196d..a043bb2314a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableBaseType_NullableContexEnabled.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableBaseType_NullableContexEnabled.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "714936b16425e1b5a49883c3e910ed43c30422ebc564f54651880695133a3b4b"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : MyBasePage<TestModel?>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : MyBasePage<TestModel?>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableBaseType_NullableContexEnabled.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableBaseType_NullableContexEnabled.ir.txt
index 4c81d1f15e7..6a1136c45a7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableBaseType_NullableContexEnabled.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableBaseType_NullableContexEnabled.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - MyBasePage<TestModel?> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - MyBasePage<TestModel?> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
                     LazyIntermediateToken - (0:0,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextEnabled.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextEnabled.codegen.cs
index 78af829efa1..8ff9736d1a7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextEnabled.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextEnabled.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "b354ee3595811e9701f9c464ddf35ccb31360a3799b7bb4279192f084591a4fe"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel?>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel?>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextEnabled.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextEnabled.ir.txt
index 38a57ff69d2..676d1e370ea 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextEnabled.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextEnabled.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel?> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel?> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
                     LazyIntermediateToken - (0:0,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextNotEnabled.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextNotEnabled.codegen.cs
index 78af829efa1..8ff9736d1a7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextNotEnabled.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextNotEnabled.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "b354ee3595811e9701f9c464ddf35ccb31360a3799b7bb4279192f084591a4fe"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -24,7 +24,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/test.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel?>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel?>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextNotEnabled.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextNotEnabled.ir.txt
index 38a57ff69d2..676d1e370ea 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextNotEnabled.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorView_WithNullableModel_NullableContextNotEnabled.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -12,7 +12,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel?> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_test - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<TestModel?> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml)
                     LazyIntermediateToken - (0:0,0 [2] TestFiles\IntegrationTests\CodeGenerationIntegrationTest\test.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.codegen.cs
index 81077af8977..8c7dd05d49e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.ir.txt
index cc0aa1a3871..04d308dc6fe 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTestTagHelper - __InputTestTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.mappings.txt
index cb8e50488d6..744d86e6e84 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.mappings.txt
@@ -1,29 +1,29 @@
 Source Location: (7:0,7 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |DateTime|
-Generated Location: (1652:32,0 [8] )
+Generated Location: (1678:32,0 [8] )
 |DateTime|
 
 Source Location: (33:2,14 [29] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |"InputTestTagHelper, AppCode"|
-Generated Location: (1945:42,37 [29] )
+Generated Location: (1971:42,37 [29] )
 |"InputTestTagHelper, AppCode"|
 
 Source Location: (152:10,9 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |Section1|
-Generated Location: (2221:52,22 [8] )
+Generated Location: (2247:52,22 [8] )
 |Section1|
 
 Source Location: (68:4,2 [46] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 | 
     Layout = "_SectionTestLayout.cshtml";
 |
-Generated Location: (2719:69,2 [46] )
+Generated Location: (2745:69,2 [46] )
 | 
     Layout = "_SectionTestLayout.cshtml";
 |
 
 Source Location: (222:12,21 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |Date|
-Generated Location: (3182:79,102 [4] )
+Generated Location: (3208:79,102 [4] )
 |Date|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.codegen.cs
index dacf79c54db..1f7e752cf29 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "1ed96a957fe000fd0c80cc511def19ab692563eb64f3349a4c87c524e2ecbd60"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.ir.txt
index 53f5abfb6ee..8f0184c644c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<DateTime> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTestTagHelper - __InputTestTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.codegen.cs
index 624e21b46c6..e6ee941687c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -35,7 +35,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.ir.txt
index f3331e380a8..fcf408db474 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [25] ) - global::System.Linq
@@ -13,7 +13,7 @@
         UsingDirective - (73:3,1 [12] UsingDirectives.cshtml) - System
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.mappings.txt
index a22a7e8ae05..406be5361cf 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (1:0,1 [27] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives.cshtml)
 |using System.ComponentModel|
-Generated Location: (529:14,0 [27] )
+Generated Location: (546:14,0 [27] )
 |using System.ComponentModel|
 
 Source Location: (31:1,1 [24] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives.cshtml)
 |using System.Collections|
-Generated Location: (690:19,0 [24] )
+Generated Location: (707:19,0 [24] )
 |using System.Collections|
 
 Source Location: (58:2,1 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives.cshtml)
 |using System|
-Generated Location: (848:24,0 [12] )
+Generated Location: (865:24,0 [12] )
 |using System|
 
 Source Location: (73:3,1 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives.cshtml)
 |using System|
-Generated Location: (994:29,0 [12] )
+Generated Location: (1011:29,0 [12] )
 |using System|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_Runtime.codegen.cs
index 8a8ffe366b1..44a2a7ae909 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "9194971d2fb7908a02b02841f18655ccc0908a204c2fa948e8dc7e947269da86"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System.Collections.Generic;
@@ -41,7 +41,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_Runtime.ir.txt
index a679c25ed02..882893e7b82 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UsingDirectives_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
         UsingDirective - (95:3,1 [38] ) - global::System.Threading.Tasks
@@ -14,7 +14,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UsingDirectives - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam_Runtime.codegen.cs
index 377646cfe7d..8be96b61c8d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "83aa72bbe254ff67d9ee42878d80c6403361bcbb777a50d8b3d718cba176d15c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
@@ -41,9 +41,9 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
                 return __backed__tagHelperScopeManager;
             }
         }
-        private global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper __OptionalTestViewComponentTagHelper;
-        private global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper __OptionalTestWithParamViewComponentTagHelper;
-        private global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper __OptionalWithMultipleTypesViewComponentTagHelper;
+        private global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper __OptionalTestViewComponentTagHelper;
+        private global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper __OptionalTestWithParamViewComponentTagHelper;
+        private global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper __OptionalWithMultipleTypesViewComponentTagHelper;
         #pragma warning disable 1998
         public async override global::System.Threading.Tasks.Task ExecuteAsync()
         {
@@ -51,7 +51,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             __tagHelperExecutionContext = __tagHelperScopeManager.Begin("vc:optional-test", global::Microsoft.AspNetCore.Razor.TagHelpers.TagMode.StartTagAndEndTag, "test", async() => {
             }
             );
-            __OptionalTestViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper>();
+            __OptionalTestViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__OptionalTestViewComponentTagHelper);
             await __tagHelperRunner.RunAsync(__tagHelperExecutionContext);
             if (!__tagHelperExecutionContext.Output.IsContentModified)
@@ -64,7 +64,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             __tagHelperExecutionContext = __tagHelperScopeManager.Begin("vc:optional-test", global::Microsoft.AspNetCore.Razor.TagHelpers.TagMode.StartTagAndEndTag, "test", async() => {
             }
             );
-            __OptionalTestViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper>();
+            __OptionalTestViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__OptionalTestViewComponentTagHelper);
             __OptionalTestViewComponentTagHelper.showSecret = 
 #nullable restore
@@ -87,7 +87,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             __tagHelperExecutionContext = __tagHelperScopeManager.Begin("vc:optional-test-with-param", global::Microsoft.AspNetCore.Razor.TagHelpers.TagMode.StartTagAndEndTag, "test", async() => {
             }
             );
-            __OptionalTestWithParamViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper>();
+            __OptionalTestWithParamViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__OptionalTestWithParamViewComponentTagHelper);
             BeginWriteTagHelperAttribute();
             WriteLiteral("mysecret");
@@ -105,7 +105,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             __tagHelperExecutionContext = __tagHelperScopeManager.Begin("vc:optional-test-with-param", global::Microsoft.AspNetCore.Razor.TagHelpers.TagMode.StartTagAndEndTag, "test", async() => {
             }
             );
-            __OptionalTestWithParamViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper>();
+            __OptionalTestWithParamViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__OptionalTestWithParamViewComponentTagHelper);
             BeginWriteTagHelperAttribute();
             WriteLiteral("mysecret");
@@ -133,7 +133,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             __tagHelperExecutionContext = __tagHelperScopeManager.Begin("vc:optional-with-multiple-types", global::Microsoft.AspNetCore.Razor.TagHelpers.TagMode.StartTagAndEndTag, "test", async() => {
             }
             );
-            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
+            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__OptionalWithMultipleTypesViewComponentTagHelper);
             await __tagHelperRunner.RunAsync(__tagHelperExecutionContext);
             if (!__tagHelperExecutionContext.Output.IsContentModified)
@@ -146,7 +146,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             __tagHelperExecutionContext = __tagHelperScopeManager.Begin("vc:optional-with-multiple-types", global::Microsoft.AspNetCore.Razor.TagHelpers.TagMode.StartTagAndEndTag, "test", async() => {
             }
             );
-            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
+            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__OptionalWithMultipleTypesViewComponentTagHelper);
             __OptionalWithMultipleTypesViewComponentTagHelper.age = 
 #nullable restore
@@ -189,7 +189,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             __tagHelperExecutionContext = __tagHelperScopeManager.Begin("vc:optional-with-multiple-types", global::Microsoft.AspNetCore.Razor.TagHelpers.TagMode.StartTagAndEndTag, "test", async() => {
             }
             );
-            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
+            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__OptionalWithMultipleTypesViewComponentTagHelper);
             __OptionalWithMultipleTypesViewComponentTagHelper.age = 
 #nullable restore
@@ -222,7 +222,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             __tagHelperExecutionContext = __tagHelperScopeManager.Begin("vc:optional-with-multiple-types", global::Microsoft.AspNetCore.Razor.TagHelpers.TagMode.StartTagAndEndTag, "test", async() => {
             }
             );
-            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
+            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__OptionalWithMultipleTypesViewComponentTagHelper);
             __OptionalWithMultipleTypesViewComponentTagHelper.age = 
 #nullable restore
@@ -265,7 +265,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             __tagHelperExecutionContext = __tagHelperScopeManager.Begin("vc:optional-with-multiple-types", global::Microsoft.AspNetCore.Razor.TagHelpers.TagMode.StartTagAndEndTag, "test", async() => {
             }
             );
-            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
+            __OptionalWithMultipleTypesViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__OptionalWithMultipleTypesViewComponentTagHelper);
             __OptionalWithMultipleTypesViewComponentTagHelper.age = 
 #nullable restore
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam_Runtime.ir.txt
index 4f08e19b817..45573d87c08 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelperOptionalParam_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,23 +11,23 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
-            FieldDeclaration -  - private - global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper - __OptionalTestViewComponentTagHelper
-            FieldDeclaration -  - private - global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper - __OptionalTestWithParamViewComponentTagHelper
-            FieldDeclaration -  - private - global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper - __OptionalWithMultipleTypesViewComponentTagHelper
+            FieldDeclaration -  - private - global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper - __OptionalTestViewComponentTagHelper
+            FieldDeclaration -  - private - global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper - __OptionalTestWithParamViewComponentTagHelper
+            FieldDeclaration -  - private - global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper - __OptionalWithMultipleTypesViewComponentTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (28:1,0 [2] ViewComponentTagHelperOptionalParam.cshtml)
                     LazyIntermediateToken - (28:1,0 [2] ViewComponentTagHelperOptionalParam.cshtml) - Html - \n
                 TagHelper - (30:2,0 [37] ViewComponentTagHelperOptionalParam.cshtml) - vc:optional-test - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper
                     DefaultTagHelperExecute - 
                 HtmlContent - (67:2,37 [2] ViewComponentTagHelperOptionalParam.cshtml)
                     LazyIntermediateToken - (67:2,37 [2] ViewComponentTagHelperOptionalParam.cshtml) - Html - \n
                 TagHelper - (69:3,0 [57] ViewComponentTagHelperOptionalParam.cshtml) - vc:optional-test - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestViewComponentTagHelper
                     DefaultTagHelperProperty - (100:3,31 [5] ViewComponentTagHelperOptionalParam.cshtml) - show-secret - bool OptionalTestViewComponentTagHelper.showSecret - HtmlAttributeValueStyle.DoubleQuotes
                         CSharpExpression - (101:3,32 [4] ViewComponentTagHelperOptionalParam.cshtml)
                             LazyIntermediateToken - (101:3,32 [4] ViewComponentTagHelperOptionalParam.cshtml) - CSharp - true
@@ -36,7 +36,7 @@
                     LazyIntermediateToken - (126:3,57 [4] ViewComponentTagHelperOptionalParam.cshtml) - Html - \n\n
                 TagHelper - (130:5,0 [77] ViewComponentTagHelperOptionalParam.cshtml) - vc:optional-test-with-param - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper
                     DefaultTagHelperProperty - (167:5,37 [8] ViewComponentTagHelperOptionalParam.cshtml) - secret - string OptionalTestWithParamViewComponentTagHelper.secret - HtmlAttributeValueStyle.DoubleQuotes
                         HtmlContent - (167:5,37 [8] ViewComponentTagHelperOptionalParam.cshtml)
                             LazyIntermediateToken - (167:5,37 [8] ViewComponentTagHelperOptionalParam.cshtml) - Html - mysecret
@@ -45,7 +45,7 @@
                     LazyIntermediateToken - (207:5,77 [2] ViewComponentTagHelperOptionalParam.cshtml) - Html - \n
                 TagHelper - (209:6,0 [97] ViewComponentTagHelperOptionalParam.cshtml) - vc:optional-test-with-param - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalTestWithParamViewComponentTagHelper
                     DefaultTagHelperProperty - (246:6,37 [8] ViewComponentTagHelperOptionalParam.cshtml) - secret - string OptionalTestWithParamViewComponentTagHelper.secret - HtmlAttributeValueStyle.DoubleQuotes
                         HtmlContent - (246:6,37 [8] ViewComponentTagHelperOptionalParam.cshtml)
                             LazyIntermediateToken - (246:6,37 [8] ViewComponentTagHelperOptionalParam.cshtml) - Html - mysecret
@@ -57,13 +57,13 @@
                     LazyIntermediateToken - (306:6,97 [4] ViewComponentTagHelperOptionalParam.cshtml) - Html - \n\n
                 TagHelper - (310:8,0 [67] ViewComponentTagHelperOptionalParam.cshtml) - vc:optional-with-multiple-types - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
                     DefaultTagHelperExecute - 
                 HtmlContent - (377:8,67 [2] ViewComponentTagHelperOptionalParam.cshtml)
                     LazyIntermediateToken - (377:8,67 [2] ViewComponentTagHelperOptionalParam.cshtml) - Html - \n
                 TagHelper - (379:9,0 [122] ViewComponentTagHelperOptionalParam.cshtml) - vc:optional-with-multiple-types - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
                     DefaultTagHelperProperty - (417:9,38 [2] ViewComponentTagHelperOptionalParam.cshtml) - age - int OptionalWithMultipleTypesViewComponentTagHelper.age - HtmlAttributeValueStyle.DoubleQuotes
                         LazyIntermediateToken - (417:9,38 [2] ViewComponentTagHelperOptionalParam.cshtml) - CSharp - 12
                     DefaultTagHelperProperty - (439:9,60 [4] ViewComponentTagHelperOptionalParam.cshtml) - favorite-decimal - double OptionalWithMultipleTypesViewComponentTagHelper.favoriteDecimal - HtmlAttributeValueStyle.DoubleQuotes
@@ -75,7 +75,7 @@
                     LazyIntermediateToken - (501:9,122 [2] ViewComponentTagHelperOptionalParam.cshtml) - Html - \n
                 TagHelper - (503:10,0 [100] ViewComponentTagHelperOptionalParam.cshtml) - vc:optional-with-multiple-types - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
                     DefaultTagHelperProperty - (541:10,38 [2] ViewComponentTagHelperOptionalParam.cshtml) - age - int OptionalWithMultipleTypesViewComponentTagHelper.age - HtmlAttributeValueStyle.DoubleQuotes
                         LazyIntermediateToken - (541:10,38 [2] ViewComponentTagHelperOptionalParam.cshtml) - CSharp - 12
                     DefaultTagHelperProperty - (563:10,60 [4] ViewComponentTagHelperOptionalParam.cshtml) - favorite-decimal - double OptionalWithMultipleTypesViewComponentTagHelper.favoriteDecimal - HtmlAttributeValueStyle.DoubleQuotes
@@ -85,7 +85,7 @@
                     LazyIntermediateToken - (603:10,100 [2] ViewComponentTagHelperOptionalParam.cshtml) - Html - \n
                 TagHelper - (605:11,0 [126] ViewComponentTagHelperOptionalParam.cshtml) - vc:optional-with-multiple-types - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
                     DefaultTagHelperProperty - (643:11,38 [2] ViewComponentTagHelperOptionalParam.cshtml) - age - int OptionalWithMultipleTypesViewComponentTagHelper.age - HtmlAttributeValueStyle.DoubleQuotes
                         LazyIntermediateToken - (643:11,38 [2] ViewComponentTagHelperOptionalParam.cshtml) - CSharp - 12
                     DefaultTagHelperProperty - (665:11,60 [4] ViewComponentTagHelperOptionalParam.cshtml) - favorite-decimal - double OptionalWithMultipleTypesViewComponentTagHelper.favoriteDecimal - HtmlAttributeValueStyle.DoubleQuotes
@@ -97,7 +97,7 @@
                     LazyIntermediateToken - (731:11,126 [2] ViewComponentTagHelperOptionalParam.cshtml) - Html - \n
                 TagHelper - (733:12,0 [126] ViewComponentTagHelperOptionalParam.cshtml) - vc:optional-with-multiple-types - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelperOptionalParam.__Generated__OptionalWithMultipleTypesViewComponentTagHelper
                     DefaultTagHelperProperty - (771:12,38 [2] ViewComponentTagHelperOptionalParam.cshtml) - age - int OptionalWithMultipleTypesViewComponentTagHelper.age - HtmlAttributeValueStyle.DoubleQuotes
                         LazyIntermediateToken - (771:12,38 [2] ViewComponentTagHelperOptionalParam.cshtml) - CSharp - 12
                     DefaultTagHelperProperty - (793:12,60 [4] ViewComponentTagHelperOptionalParam.cshtml) - favorite-decimal - double OptionalWithMultipleTypesViewComponentTagHelper.favoriteDecimal - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.codegen.cs
index eb19091d31e..3ff1d5ee76c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
@@ -25,7 +25,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
         #pragma warning restore 0649
         private global::Microsoft.AspNetCore.Razor.Runtime.TagHelpers.TagHelperRunner __tagHelperRunner = new global::Microsoft.AspNetCore.Razor.Runtime.TagHelpers.TagHelperRunner();
         private global::AllTagHelper __AllTagHelper;
-        private global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper __TestViewComponentTagHelper;
+        private global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper __TestViewComponentTagHelper;
         #pragma warning disable 219
         private void __RazorDirectiveTokenHelpers__() {
         ((global::System.Action)(() => {
@@ -55,7 +55,7 @@ private void __RazorDirectiveTokenHelpers__() {
 #line hidden
 #nullable disable
             __AllTagHelper = CreateTagHelper<global::AllTagHelper>();
-            __TestViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper>();
+            __TestViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper>();
 #nullable restore
 #line 6 "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper.cshtml"
                 __o = foo;
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.ir.txt
index ef059352dae..a9c80f4be8b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,10 +10,10 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::AllTagHelper - __AllTagHelper
-            FieldDeclaration -  - private - global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper - __TestViewComponentTagHelper
+            FieldDeclaration -  - private - global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper - __TestViewComponentTagHelper
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
@@ -45,7 +45,7 @@
                 TagHelper - (61:5,0 [50] ViewComponentTagHelper.cshtml) - vc:test - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
                     DefaultTagHelperCreate -  - AllTagHelper
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper
                     DefaultTagHelperProperty - (82:5,21 [4] ViewComponentTagHelper.cshtml) - first-name - string TestViewComponentTagHelper.firstName - HtmlAttributeValueStyle.DoubleQuotes
                         CSharpExpression - (83:5,22 [3] ViewComponentTagHelper.cshtml)
                             LazyIntermediateToken - (83:5,22 [3] ViewComponentTagHelper.cshtml) - CSharp - foo
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.mappings.txt
index 057088936b2..2a460b44375 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_DesignTime.mappings.txt
@@ -1,19 +1,19 @@
 Source Location: (14:0,14 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper.cshtml)
 |"*, AppCode"|
-Generated Location: (1904:33,37 [12] )
+Generated Location: (1947:33,37 [12] )
 |"*, AppCode"|
 
 Source Location: (30:1,2 [26] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper.cshtml)
 |
     var foo = "Hello";
 |
-Generated Location: (2412:50,2 [26] )
+Generated Location: (2455:50,2 [26] )
 |
     var foo = "Hello";
 |
 
 Source Location: (83:5,22 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper.cshtml)
 |foo|
-Generated Location: (2901:60,22 [3] )
+Generated Location: (2961:60,22 [3] )
 |foo|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_Runtime.codegen.cs
index 56a0795ba61..6a736639fb4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "9ef17a17b6e1fedefe92b2dd4e87273d3ae73d9b1f8b2ad44ce57c5611f991d3"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,10 +18,10 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
-        private global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper __TestViewComponentTagHelper;
+        private global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper __TestViewComponentTagHelper;
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("bar", " World", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
         #line hidden
         #pragma warning disable 0649
@@ -62,7 +62,7 @@ public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewCompon
             );
             __AllTagHelper = CreateTagHelper<global::AllTagHelper>();
             __tagHelperExecutionContext.Add(__AllTagHelper);
-            __TestViewComponentTagHelper = CreateTagHelper<global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper>();
+            __TestViewComponentTagHelper = CreateTagHelper<global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper>();
             __tagHelperExecutionContext.Add(__TestViewComponentTagHelper);
             BeginWriteTagHelperAttribute();
             WriteLiteral(
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_Runtime.ir.txt
index 3a580f4bcfd..dbd7497bf4e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewComponentTagHelper_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,8 +11,8 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
-            FieldDeclaration -  - private - global::AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper - __TestViewComponentTagHelper
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+            FieldDeclaration -  - private - global::AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper - __TestViewComponentTagHelper
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - bar -  World - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::AllTagHelper - __AllTagHelper
@@ -24,7 +24,7 @@
                 TagHelper - (61:5,0 [50] ViewComponentTagHelper.cshtml) - vc:test - TagMode.StartTagAndEndTag
                     DefaultTagHelperBody - 
                     DefaultTagHelperCreate -  - AllTagHelper
-                    DefaultTagHelperCreate -  - AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper
+                    DefaultTagHelperCreate -  - AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewComponentTagHelper.__Generated__TestViewComponentTagHelper
                     DefaultTagHelperProperty - (82:5,21 [4] ViewComponentTagHelper.cshtml) - first-name - string TestViewComponentTagHelper.firstName - HtmlAttributeValueStyle.DoubleQuotes
                         CSharpExpression - (83:5,22 [3] ViewComponentTagHelper.cshtml)
                             LazyIntermediateToken - (83:5,22 [3] ViewComponentTagHelper.cshtml) - CSharp - foo
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.codegen.cs
index 7b7b1d9c1d8..cf9a098e8f9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.codegen.cs
@@ -16,7 +16,7 @@ namespace Test.Namespace
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewWithNamespace : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewWithNamespace : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.ir.txt
index f3b8c4bf6a0..127368efc61 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.ir.txt
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewWithNamespace - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewWithNamespace - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.mappings.txt
index 9bc576597c0..e262a3df658 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (11:0,11 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace.cshtml)
 |Test.Namespace|
-Generated Location: (1252:26,44 [14] )
+Generated Location: (1261:26,44 [14] )
 |Test.Namespace|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_Runtime.codegen.cs
index 9f90d820011..703910bc92e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_Runtime.codegen.cs
@@ -18,7 +18,7 @@ namespace Test.Namespace
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewWithNamespace : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewWithNamespace : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_Runtime.ir.txt
index 08028a66683..0084d515daa 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ViewWithNamespace_Runtime.ir.txt
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewWithNamespace - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ViewWithNamespace - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (27:1,0 [20] ViewWithNamespace.cshtml)
                     LazyIntermediateToken - (27:1,0 [3] ViewWithNamespace.cshtml) - Html - <h1
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.codegen.cs
index 865f0b792cb..7d2c5ff4e3b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.ir.txt
index de86e512705..ba2f901ea93 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.mappings.txt
index 157f736942d..3462c072be6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (8:0,8 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports.cshtml)
 |IHtmlHelper<TModel>|
-Generated Location: (1189:26,0 [19] )
+Generated Location: (1215:26,0 [19] )
 |IHtmlHelper<TModel>|
 
 Source Location: (28:0,28 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports.cshtml)
 |Helper|
-Generated Location: (1482:36,22 [6] )
+Generated Location: (1508:36,22 [6] )
 |Helper|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_Runtime.codegen.cs
index e1b5f94bf16..a59ed4b4c39 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "d62f98eaaf5b78af8d93afeee3b564ac056a55d715d72361969351a6dd2ca3b2"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_Runtime.ir.txt
index 5fb9225a6c9..d617143dc64 100644
--- a/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/_ViewImports_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest__ViewImports - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.codegen.cs
index 6f587dfcbe1..8cde3aae0e6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.ir.txt
index e071424669a..9a44b9c2446 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.mappings.txt
index 07c4a5e920b..35a8de78307 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1253:26,37 [17] )
+Generated Location: (1279:26,37 [17] )
 |"*, TestAssembly"|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_Runtime.codegen.cs
index d8ffd3b95f5..243ebcf2aa9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "acb2e9438f3250e99764ff47299ab6f5503f0ade0c3b94cd2fc81bc2e2506a59"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_Runtime.ir.txt
index 405b5c6d5c4..42a48cc7afb 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AddTagHelperDirective_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AddTagHelperDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.codegen.cs
index b75ad02d02d..70f39b825c2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -44,7 +44,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.ir.txt
index bac57b386b6..f4414203409 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -18,7 +18,7 @@
             IntermediateToken - (223:3,11 [44] AttributeDirective.cshtml) - CSharp - [Conditional("DEBUG"), Conditional("TEST1")]
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.mappings.txt
index 006aec03078..299aedb346b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (11:0,11 [56] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective.cshtml)
 |[System.Runtime.InteropServices.DllImport("user32.dll")]|
-Generated Location: (607:17,11 [56] )
+Generated Location: (624:17,11 [56] )
 |[System.Runtime.InteropServices.DllImport("user32.dll")]|
 
 Source Location: (80:1,11 [51] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective.cshtml)
 |[assembly: AssemblyTitleAttribute("Some assembly")]|
-Generated Location: (839:24,11 [51] )
+Generated Location: (856:24,11 [51] )
 |[assembly: AssemblyTitleAttribute("Some assembly")]|
 
 Source Location: (144:2,11 [66] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective.cshtml)
 |[DllImport("user32.dll", SetLastError=false, ExactSpelling=false)]|
-Generated Location: (1066:31,11 [66] )
+Generated Location: (1083:31,11 [66] )
 |[DllImport("user32.dll", SetLastError=false, ExactSpelling=false)]|
 
 Source Location: (223:3,11 [44] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective.cshtml)
 |[Conditional("DEBUG"), Conditional("TEST1")]|
-Generated Location: (1308:38,11 [44] )
+Generated Location: (1325:38,11 [44] )
 |[Conditional("DEBUG"), Conditional("TEST1")]|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_Runtime.codegen.cs
index dc610f6d6d0..24e72f5cd86 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "182a864a99c94c5a3bbb535723dfb08ad1a97865628ed562e8f2c949e7098074"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -50,7 +50,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_Runtime.ir.txt
index b6d17d80ca9..35d72f241bb 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeDirective_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -19,7 +19,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (269:4,0 [13] AttributeDirective.cshtml)
                     LazyIntermediateToken - (269:4,0 [13] AttributeDirective.cshtml) - Html - \nHello World
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.codegen.cs
index ccb654f6366..ea08f7afb36 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.ir.txt
index 2242a48e869..229a19759b0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             FieldDeclaration -  - private - global::TestNamespace.CatchAllTagHelper - __TestNamespace_CatchAllTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.mappings.txt
index 3b747b7422b..7643f998ef9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_DesignTime.mappings.txt
@@ -1,15 +1,15 @@
 Source Location: (14:0,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers.cshtml)
 |*, TestAssembly|
-Generated Location: (2027:35,38 [15] )
+Generated Location: (2053:35,38 [15] )
 |*, TestAssembly|
 
 Source Location: (187:5,36 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers.cshtml)
 |true|
-Generated Location: (3130:58,42 [4] )
+Generated Location: (3156:58,42 [4] )
 |true|
 
 Source Location: (233:6,36 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers.cshtml)
 |true|
-Generated Location: (3897:71,42 [4] )
+Generated Location: (3923:71,42 [4] )
 |true|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_Runtime.codegen.cs
index d5cabab89c3..fdd69b41d50 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a43c77165a8cc48045af412fa05ad51a01a7ac7693152e08d46013b3fe119376"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("catchAll", new global::Microsoft.AspNetCore.Html.HtmlString("hi"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_Runtime.ir.txt
index 0add2b2b0b7..1b143bcc8ec 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/AttributeTargetingTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_AttributeTargetingTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - catchAll - hi - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_1 - type - checkbox - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - class - btn - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.codegen.cs
index 5408bce08b8..0dfdaadb33b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.cs-diagnostics.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.cs-diagnostics.txt
index a513815d442..17925588265 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.cs-diagnostics.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.cs-diagnostics.txt
@@ -9,7 +9,7 @@ Diagnostic(ErrorCode.ERR_InvalidExprTerm, ";").WithArguments(";").WithLocation(1
 Diagnostic(ErrorCode.ERR_BadArgCount, "Foo").WithArguments("Foo", "2").WithLocation(19, 49),
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml(20,58): error CS0119: 'TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()' is a method, which is not valid in the given context
 //                                              __o = await Foo.Bar(1, 2);
-Diagnostic(ErrorCode.ERR_BadSKunknown, "Foo").WithArguments("AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()", "method").WithLocation(20, 58),
+Diagnostic(ErrorCode.ERR_BadSKunknown, "Foo").WithArguments("AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()", "method").WithLocation(20, 58),
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml(21,48): error CS1501: No overload for method 'Foo' takes 2 arguments
 //                                    __o = await Foo("bob", true);
 Diagnostic(ErrorCode.ERR_BadArgCount, "Foo").WithArguments("Foo", "2").WithLocation(21, 48),
@@ -18,7 +18,7 @@ Diagnostic(ErrorCode.ERR_BadArgCount, "Foo").WithArguments("Foo", "2").WithLocat
 Diagnostic(ErrorCode.ERR_NameNotInContext, "something").WithArguments("something").WithLocation(22, 54),
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml(23,59): error CS0119: 'TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()' is a method, which is not valid in the given context
 //                                                     await Foo.Bar(1, 2) 
-Diagnostic(ErrorCode.ERR_BadSKunknown, "Foo").WithArguments("AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()", "method").WithLocation(23, 59),
+Diagnostic(ErrorCode.ERR_BadSKunknown, "Foo").WithArguments("AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()", "method").WithLocation(23, 59),
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml(23,72): error CS1002: ; expected
 //                                                     await Foo.Bar(1, 2) 
 Diagnostic(ErrorCode.ERR_SemicolonExpected, "").WithLocation(23, 72),
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.ir.txt
index bc12cfc2123..fb37c7848d0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.mappings.txt
index f982a971eb6..6af791b25a6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_DesignTime.mappings.txt
@@ -1,81 +1,81 @@
 Source Location: (192:9,39 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 |await Foo()|
-Generated Location: (1464:33,39 [11] )
+Generated Location: (1490:33,39 [11] )
 |await Foo()|
 
 Source Location: (247:10,38 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 |await Foo()|
-Generated Location: (1667:40,38 [11] )
+Generated Location: (1693:40,38 [11] )
 |await Foo()|
 
 Source Location: (304:11,39 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 | await Foo(); |
-Generated Location: (1871:47,39 [14] )
+Generated Location: (1897:47,39 [14] )
 | await Foo(); |
 
 Source Location: (371:12,46 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 | |
-Generated Location: (2084:54,46 [1] )
+Generated Location: (2110:54,46 [1] )
 | |
 
 Source Location: (376:12,51 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 |await Foo()|
-Generated Location: (2289:61,51 [11] )
+Generated Location: (2315:61,51 [11] )
 |await Foo()|
 
 Source Location: (391:12,66 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 | |
-Generated Location: (2520:68,66 [1] )
+Generated Location: (2546:68,66 [1] )
 | |
 
 Source Location: (448:13,49 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 |await|
-Generated Location: (2723:75,49 [5] )
+Generated Location: (2749:75,49 [5] )
 |await|
 
 Source Location: (578:18,42 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 |await Foo(1, 2)|
-Generated Location: (2924:82,42 [15] )
+Generated Location: (2950:82,42 [15] )
 |await Foo(1, 2)|
 
 Source Location: (650:19,51 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 |await Foo.Bar(1, 2)|
-Generated Location: (3144:89,51 [19] )
+Generated Location: (3170:89,51 [19] )
 |await Foo.Bar(1, 2)|
 
 Source Location: (716:20,41 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 |await Foo("bob", true)|
-Generated Location: (3358:96,41 [22] )
+Generated Location: (3384:96,41 [22] )
 |await Foo("bob", true)|
 
 Source Location: (787:21,42 [39] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 | await Foo(something, hello: "world"); |
-Generated Location: (3576:103,42 [39] )
+Generated Location: (3602:103,42 [39] )
 | await Foo(something, hello: "world"); |
 
 Source Location: (884:22,51 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 | await Foo.Bar(1, 2) |
-Generated Location: (3819:110,51 [21] )
+Generated Location: (3845:110,51 [21] )
 | await Foo.Bar(1, 2) |
 
 Source Location: (961:23,49 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 | |
-Generated Location: (4042:117,49 [1] )
+Generated Location: (4068:117,49 [1] )
 | |
 
 Source Location: (966:23,54 [27] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 |await Foo(boolValue: false)|
-Generated Location: (4250:124,54 [27] )
+Generated Location: (4276:124,54 [27] )
 |await Foo(boolValue: false)|
 
 Source Location: (997:23,85 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 | |
-Generated Location: (4516:131,85 [1] )
+Generated Location: (4542:131,85 [1] )
 | |
 
 Source Location: (1057:24,52 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
 |await ("wrrronggg")|
-Generated Location: (4722:138,52 [19] )
+Generated Location: (4748:138,52 [19] )
 |await ("wrrronggg")|
 
 Source Location: (12:0,12 [76] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml)
@@ -85,7 +85,7 @@ Source Location: (12:0,12 [76] TestFiles/IntegrationTests/CodeGenerationIntegrat
         return "Bar";
     }
 |
-Generated Location: (4955:147,12 [76] )
+Generated Location: (4981:147,12 [76] )
 |
     public async Task<string> Foo()
     {
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.codegen.cs
index b14ba777995..1c0297867fa 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "347cf5b257c3885845256697175dd94c0ef0bef29e4fca7e4ec1a009ff29d9a6"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.cs-diagnostics.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.cs-diagnostics.txt
index 689f9027e75..2a1cc187c52 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.cs-diagnostics.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.cs-diagnostics.txt
@@ -9,7 +9,7 @@ Diagnostic(ErrorCode.ERR_InvalidExprTerm, "").WithArguments(")").WithLocation(14
 Diagnostic(ErrorCode.ERR_BadArgCount, "Foo").WithArguments("Foo", "2").WithLocation(19, 49),
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml(20,58): error CS0119: 'TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()' is a method, which is not valid in the given context
 // await Foo.Bar(1, 2)
-Diagnostic(ErrorCode.ERR_BadSKunknown, "Foo").WithArguments("AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()", "method").WithLocation(20, 58),
+Diagnostic(ErrorCode.ERR_BadSKunknown, "Foo").WithArguments("AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()", "method").WithLocation(20, 58),
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml(21,48): error CS1501: No overload for method 'Foo' takes 2 arguments
 // await Foo("bob", true)
 Diagnostic(ErrorCode.ERR_BadArgCount, "Foo").WithArguments("Foo", "2").WithLocation(21, 48),
@@ -18,7 +18,7 @@ Diagnostic(ErrorCode.ERR_BadArgCount, "Foo").WithArguments("Foo", "2").WithLocat
 Diagnostic(ErrorCode.ERR_NameNotInContext, "something").WithArguments("something").WithLocation(22, 54),
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml(23,59): error CS0119: 'TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()' is a method, which is not valid in the given context
 //  await Foo.Bar(1, 2) 
-Diagnostic(ErrorCode.ERR_BadSKunknown, "Foo").WithArguments("AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()", "method").WithLocation(23, 59),
+Diagnostic(ErrorCode.ERR_BadSKunknown, "Foo").WithArguments("AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await.Foo()", "method").WithLocation(23, 59),
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await.cshtml(23,72): error CS1002: ; expected
 //  await Foo.Bar(1, 2) 
 Diagnostic(ErrorCode.ERR_SemicolonExpected, "").WithLocation(23, 72),
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.ir.txt
index dc8a7217ddb..0ec037d4b56 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Await_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Await - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (91:6,0 [100] Await.cshtml)
                     LazyIntermediateToken - (91:6,0 [2] Await.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.codegen.cs
index 813abd42c27..4cedf81e7ad 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.ir.txt
index dd8c964d897..e0c5eb50cef 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.mappings.txt
index 1e0fdaa5abf..e1decd1dc69 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_DesignTime.mappings.txt
@@ -1,15 +1,15 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1895:34,37 [17] )
+Generated Location: (1921:34,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (220:5,38 [23] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers.cshtml)
 |ViewBag.DefaultInterval|
-Generated Location: (2816:55,38 [23] )
+Generated Location: (2842:55,38 [23] )
 |ViewBag.DefaultInterval|
 
 Source Location: (303:6,40 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers.cshtml)
 |true|
-Generated Location: (3628:69,42 [4] )
+Generated Location: (3654:69,42 [4] )
 |true|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.codegen.cs
index bce2a46e832..a59d14a5a71 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.ir.txt
index 616179e17be..0c8fd38c72d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.mappings.txt
index b31f7e030d7..b853caca4ce 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_DesignTime.mappings.txt
@@ -1,15 +1,15 @@
 Source Location: (17:0,17 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed.cshtml)
 |"THS"|
-Generated Location: (1922:34,37 [5] )
+Generated Location: (1948:34,37 [5] )
 |"THS"|
 
 Source Location: (38:1,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed.cshtml)
 |"*, TestAssembly"|
-Generated Location: (2204:44,37 [17] )
+Generated Location: (2230:44,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (226:7,43 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed.cshtml)
 |true|
-Generated Location: (3120:65,43 [4] )
+Generated Location: (3146:65,43 [4] )
 |true|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_Runtime.codegen.cs
index 0221050c13c..efb984760a1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "e26ec84b1a01b76c3d10ce2cba2205ab75c8b761b2507c37a6efbfe65c779b33"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", "checkbox", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_Runtime.ir.txt
index 5328116dfee..52f73ff911e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Prefixed_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_Prefixed - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - type - checkbox - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - class - Hello World - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.codegen.cs
index 567029faed2..7fd152a6938 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.ir.txt
index 0b5c468e147..a99dc8eff04 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.mappings.txt
index 293d9af037a..a9fdd47debb 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_DesignTime.mappings.txt
@@ -1,15 +1,15 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1943:34,37 [17] )
+Generated Location: (1969:34,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (50:1,17 [20] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper.cshtml)
 |"doesntmatter, nice"|
-Generated Location: (2244:44,37 [20] )
+Generated Location: (2270:44,37 [20] )
 |"doesntmatter, nice"|
 
 Source Location: (234:7,40 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper.cshtml)
 |true|
-Generated Location: (3772:72,42 [4] )
+Generated Location: (3798:72,42 [4] )
 |true|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_Runtime.codegen.cs
index 1393a8a5025..d31e52b4fe3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "3c3f70086ebb07abc64ab51a5ec8d70be530fb87bb11790ef3989464e5532b55"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", "text", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_Runtime.ir.txt
index 786f4e2e2c1..9225bc581ae 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_RemoveTagHelper_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers_RemoveTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - type - text - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_1 - type - checkbox - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - class - Hello World - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Runtime.codegen.cs
index 402316266c1..c4b86a40a45 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "c8793c171f4a151a33e212951ef178accfcfb85800b349fdef9ce896e61f314e"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("data", new global::Microsoft.AspNetCore.Html.HtmlString("-delay1000"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Runtime.ir.txt
index 5285dd66289..4914fe4eb63 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/BasicTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_BasicTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - data - -delay1000 - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_1 - type - text - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_2 - type - checkbox - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.codegen.cs
index a35459d6ee6..eb50361ca56 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.ir.txt
index 1f837ad032c..b9a6925378a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.mappings.txt
index aaa647893d2..4210dc29750 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_DesignTime.mappings.txt
@@ -2,7 +2,7 @@
 |
     int i = 1;
 |
-Generated Location: (1429:33,2 [18] )
+Generated Location: (1455:33,2 [18] )
 |
     int i = 1;
 |
@@ -10,20 +10,20 @@ Generated Location: (1429:33,2 [18] )
 Source Location: (26:4,1 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |while(i <= 10) {
     |
-Generated Location: (1599:41,1 [22] )
+Generated Location: (1625:41,1 [22] )
 |while(i <= 10) {
     |
 
 Source Location: (69:5,25 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |i|
-Generated Location: (1799:49,25 [1] )
+Generated Location: (1825:49,25 [1] )
 |i|
 
 Source Location: (75:5,31 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |
     i += 1;
 }|
-Generated Location: (1985:56,31 [16] )
+Generated Location: (2011:56,31 [16] )
 |
     i += 1;
 }|
@@ -31,14 +31,14 @@ Generated Location: (1985:56,31 [16] )
 Source Location: (96:9,1 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |if(i == 11) {
     |
-Generated Location: (2156:65,1 [19] )
+Generated Location: (2182:65,1 [19] )
 |if(i == 11) {
     |
 
 Source Location: (140:10,29 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |
 }|
-Generated Location: (2358:73,29 [3] )
+Generated Location: (2384:73,29 [3] )
 |
 }|
 
@@ -46,7 +46,7 @@ Source Location: (148:13,1 [35] TestFiles/IntegrationTests/CodeGenerationIntegra
 |switch(i) {
     case 11:
         |
-Generated Location: (2516:81,1 [35] )
+Generated Location: (2542:81,1 [35] )
 |switch(i) {
     case 11:
         |
@@ -56,7 +56,7 @@ Source Location: (219:15,44 [40] TestFiles/IntegrationTests/CodeGenerationIntegr
         break;
     default:
         |
-Generated Location: (2749:90,44 [40] )
+Generated Location: (2775:90,44 [40] )
 |
         break;
     default:
@@ -66,7 +66,7 @@ Source Location: (288:18,37 [19] TestFiles/IntegrationTests/CodeGenerationIntegr
 |
         break;
 }|
-Generated Location: (2980:100,37 [19] )
+Generated Location: (3006:100,37 [19] )
 |
         break;
 }|
@@ -74,26 +74,26 @@ Generated Location: (2980:100,37 [19] )
 Source Location: (312:22,1 [39] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |for(int j = 1; j <= 10; j += 2) {
     |
-Generated Location: (3154:109,1 [39] )
+Generated Location: (3180:109,1 [39] )
 |for(int j = 1; j <= 10; j += 2) {
     |
 
 Source Location: (378:23,31 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |j|
-Generated Location: (3378:117,31 [1] )
+Generated Location: (3404:117,31 [1] )
 |j|
 
 Source Location: (384:23,37 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |
 }|
-Generated Location: (3571:124,37 [3] )
+Generated Location: (3597:124,37 [3] )
 |
 }|
 
 Source Location: (392:26,1 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |try {
     |
-Generated Location: (3729:132,1 [11] )
+Generated Location: (3755:132,1 [11] )
 |try {
     |
 
@@ -101,39 +101,39 @@ Source Location: (438:27,39 [31] TestFiles/IntegrationTests/CodeGenerationIntegr
 |
 } catch(Exception ex) {
     |
-Generated Location: (3933:140,39 [31] )
+Generated Location: (3959:140,39 [31] )
 |
 } catch(Exception ex) {
     |
 
 Source Location: (500:29,35 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |ex.Message|
-Generated Location: (4153:149,35 [10] )
+Generated Location: (4179:149,35 [10] )
 |ex.Message|
 
 Source Location: (515:29,50 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |
 }|
-Generated Location: (4368:156,50 [3] )
+Generated Location: (4394:156,50 [3] )
 |
 }|
 
 Source Location: (535:32,13 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |i|
-Generated Location: (4538:164,13 [1] )
+Generated Location: (4564:164,13 [1] )
 |i|
 
 Source Location: (545:34,1 [26] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |lock(new object()) {
     |
-Generated Location: (4695:171,1 [26] )
+Generated Location: (4721:171,1 [26] )
 |lock(new object()) {
     |
 
 Source Location: (618:35,51 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml)
 |
 }|
-Generated Location: (4926:179,51 [3] )
+Generated Location: (4952:179,51 [3] )
 |
 }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_Runtime.codegen.cs
index 4c9c14d6453..152f3fba272 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "7fc1108b4536c02783f218bd311d6a6202c6f3c6e438a6840e22e53a2efde68d"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_Runtime.ir.txt
index 229a4bc4796..c8d18bd5e40 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Blocks_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Blocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [18] Blocks.cshtml)
                     LazyIntermediateToken - (2:0,2 [18] Blocks.cshtml) - CSharp - \n    int i = 1;\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.codegen.cs
index 3cc09bc5ca0..0097ccd496b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.ir.txt
index 8308b1d58cd..c5bbb5cf5fd 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.BodyTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_BodyTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.mappings.txt
index e9fbf19e162..19c393663d0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_DesignTime.mappings.txt
@@ -6,7 +6,7 @@
         };
 
         |
-Generated Location: (1984:39,6 [187] )
+Generated Location: (2010:39,6 [187] )
 |
         var nameLookup = new Dictionary<string, (string FirstName, string LastName, object Extra)>()
         {
@@ -23,7 +23,7 @@ Source Location: (246:7,53 [253] TestFiles/IntegrationTests/CodeGenerationIntegr
         double AvogadroConstant = 6.022_140_857_747_474e23;
         decimal GoldenRatio = 1.618_033_988_749_894_848_204_586_834_365_638_117_720_309_179M;
     |
-Generated Location: (2378:52,53 [253] )
+Generated Location: (2404:52,53 [253] )
 |
 
         int Sixteen = 0b0001_0000;
@@ -40,7 +40,7 @@ Source Location: (509:15,5 [159] TestFiles/IntegrationTests/CodeGenerationIntegr
             // Do Something
         }
     }|
-Generated Location: (2791:65,5 [159] )
+Generated Location: (2817:65,5 [159] )
 |if (nameLookup.TryGetValue("John Doe", out var entry))
     {
         if (entry.Extra is bool alive)
@@ -51,12 +51,12 @@ Generated Location: (2791:65,5 [159] )
 
 Source Location: (718:23,39 [62] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7.cshtml)
 |1.618_033_988_749_894_848_204_586_834_365_638_117_720_309_179M|
-Generated Location: (3144:78,39 [62] )
+Generated Location: (3170:78,39 [62] )
 |1.618_033_988_749_894_848_204_586_834_365_638_117_720_309_179M|
 
 Source Location: (816:27,10 [34] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7.cshtml)
 |(First: "John", Last: "Doe").First|
-Generated Location: (3372:85,10 [34] )
+Generated Location: (3398:85,10 [34] )
 |(First: "John", Last: "Doe").First|
 
 Source Location: (891:30,5 [291] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7.cshtml)
@@ -72,7 +72,7 @@ Source Location: (891:30,5 [291] TestFiles/IntegrationTests/CodeGenerationIntegr
             // Do even more of something
             break;
     }|
-Generated Location: (3567:92,5 [291] )
+Generated Location: (3593:92,5 [291] )
 |switch (entry.Extra)
     {
         case int age:
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_Runtime.codegen.cs
index 95477dd0bdb..78e407e146a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a2b132455b8159d1094743b389f41b79cabc421ed6d5972456b799596f28f035"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_Runtime.ir.txt
index 648473989c3..94404ac098b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp7_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp7 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.BodyTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_BodyTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.codegen.cs
index f969d0fd6c2..7ffd58a7ca1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -20,7 +20,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.ir.txt
index b373f7b031a..f48c4d06729 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (67:2,1 [25] ) - global::System.Linq
@@ -10,7 +10,7 @@
         UsingDirective - (1:0,1 [32] CSharp8.cshtml) - System.Collections.Generic
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.mappings.txt
index 4f44d6d810c..25a1fcb62ae 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_DesignTime.mappings.txt
@@ -1,6 +1,6 @@
 Source Location: (1:0,1 [32] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
 |using System.Collections.Generic|
-Generated Location: (501:14,0 [32] )
+Generated Location: (518:14,0 [32] )
 |using System.Collections.Generic|
 
 Source Location: (39:2,2 [396] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
@@ -25,7 +25,7 @@ Source Location: (39:2,2 [396] TestFiles/IntegrationTests/CodeGenerationIntegrat
         return TestEnum.First;
     }
 |
-Generated Location: (1535:37,2 [396] )
+Generated Location: (1561:37,2 [396] )
 |
     IAsyncEnumerable<bool> GetAsyncEnumerable()
     {
@@ -50,12 +50,12 @@ Generated Location: (1535:37,2 [396] )
 
 Source Location: (441:24,1 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
 |words[1..2]|
-Generated Location: (2090:63,6 [11] )
+Generated Location: (2116:63,6 [11] )
 |words[1..2]|
 
 Source Location: (456:25,2 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
 |words[^2..^0]|
-Generated Location: (2263:70,6 [13] )
+Generated Location: (2289:70,6 [13] )
 |words[^2..^0]|
 
 Source Location: (476:27,2 [121] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
@@ -65,7 +65,7 @@ Source Location: (476:27,2 [121] TestFiles/IntegrationTests/CodeGenerationIntegr
     TestEnum.Second => "The Second!",
     _ => "The others",
 }|
-Generated Location: (2438:77,6 [121] )
+Generated Location: (2464:77,6 [121] )
 |testEnum switch
 {
     TestEnum.First => "The First!",
@@ -77,36 +77,36 @@ Source Location: (603:34,1 [56] TestFiles/IntegrationTests/CodeGenerationIntegra
 |await foreach (var val in GetAsyncEnumerable())
 {
     |
-Generated Location: (2716:89,1 [56] )
+Generated Location: (2742:89,1 [56] )
 |await foreach (var val in GetAsyncEnumerable())
 {
     |
 
 Source Location: (660:36,5 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
 |val|
-Generated Location: (2933:98,6 [3] )
+Generated Location: (2959:98,6 [3] )
 |val|
 
 Source Location: (663:36,8 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
 |
 }|
-Generated Location: (3100:105,8 [3] )
+Generated Location: (3126:105,8 [3] )
 |
 }|
 
 Source Location: (671:39,1 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
 |Person!.Name|
-Generated Location: (3264:113,6 [12] )
+Generated Location: (3290:113,6 [12] )
 |Person!.Name|
 
 Source Location: (686:40,1 [20] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
 |People![0]!.Name![1]|
-Generated Location: (3438:120,6 [20] )
+Generated Location: (3464:120,6 [20] )
 |People![0]!.Name![1]|
 
 Source Location: (709:41,1 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
 |DoSomething!(Person!)|
-Generated Location: (3620:127,6 [21] )
+Generated Location: (3646:127,6 [21] )
 |DoSomething!(Person!)|
 
 Source Location: (746:43,12 [480] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml)
@@ -134,7 +134,7 @@ Source Location: (746:43,12 [480] TestFiles/IntegrationTests/CodeGenerationInteg
         public string? Name { get; set; }
     }
 |
-Generated Location: (3858:136,12 [480] )
+Generated Location: (3884:136,12 [480] )
 |
     enum TestEnum
     {
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_Runtime.codegen.cs
index f8268b0cd78..7e11f565e73 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "4c55c366b179d82f3d2800004985646e9bf0edbf993e2f4a94cbb70079823905"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -23,7 +23,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_Runtime.ir.txt
index 07cef4d143d..bb528f13498 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CSharp8_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
         UsingDirective - (95:3,1 [38] ) - global::System.Threading.Tasks
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CSharp8 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (35:1,0 [2] CSharp8.cshtml)
                     LazyIntermediateToken - (35:1,0 [2] CSharp8.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.codegen.cs
index 55930c96a43..ac3817a6e41 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.ir.txt
index 92a30b69fac..f9f02115c98 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.mappings.txt
index 6e5397874cf..69db1115a6a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (2:0,2 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF.cshtml)
 ||
-Generated Location: (1453:33,2 [0] )
+Generated Location: (1479:33,2 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_Runtime.codegen.cs
index 43761ebc530..1ea22d8d369 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "f1213d84263417aa717c6a0a201077dbb0fede3e19230a7ca231bc16735c7119"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_Runtime.ir.txt
index 46ed83af606..b59b9bac1d8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockAtEOF_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [0] CodeBlockAtEOF.cshtml)
                     LazyIntermediateToken - (2:0,2 [0] CodeBlockAtEOF.cshtml) - CSharp - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.codegen.cs
index 1dce3d1b292..116237cce97 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.ir.txt
index 0b3b55dff00..bf304bf85e7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.mappings.txt
index 3199ac454f0..4cec43ff035 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_DesignTime.mappings.txt
@@ -1,26 +1,26 @@
 Source Location: (2:0,2 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement.cshtml)
 |
     var a = 1; |
-Generated Location: (1483:33,2 [17] )
+Generated Location: (1509:33,2 [17] )
 |
     var a = 1; |
 
 Source Location: (35:1,31 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement.cshtml)
 | 		
     var b = 1;			|
-Generated Location: (1702:41,31 [22] )
+Generated Location: (1728:41,31 [22] )
 | 		
     var b = 1;			|
 
 Source Location: (69:2,29 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement.cshtml)
 |a+b|
-Generated Location: (1924:49,29 [3] )
+Generated Location: (1950:49,29 [3] )
 |a+b|
 
 Source Location: (80:2,40 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement.cshtml)
 |
 |
-Generated Location: (2139:56,40 [2] )
+Generated Location: (2165:56,40 [2] )
 |
 |
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_Runtime.codegen.cs
index 7f668787152..217b68c331c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "e8683fb69fb02cf452dac1db41d32e64f144a321993e7b85cd64971a7791cbc6"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_Runtime.ir.txt
index 8f487442e4c..b3d714dc1dd 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlockWithTextElement_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlockWithTextElement - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [17] CodeBlockWithTextElement.cshtml)
                     LazyIntermediateToken - (2:0,2 [17] CodeBlockWithTextElement.cshtml) - CSharp - \n    var a = 1; 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.codegen.cs
index 96aef18f567..4684c3b37fc 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.ir.txt
index 288c22a3821..dcfcf916fca 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.mappings.txt
index 3f70eea5943..55124aae89b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_DesignTime.mappings.txt
@@ -4,7 +4,7 @@
         Output.Write("<p>Hello from C#, #" + i.ToString() + "</p>");
     }
 |
-Generated Location: (1438:33,2 [115] )
+Generated Location: (1464:33,2 [115] )
 |
     for(int i = 1; i <= 10; i++) {
         Output.Write("<p>Hello from C#, #" + i.ToString() + "</p>");
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_Runtime.codegen.cs
index 2ff6258f254..a4af83b4488 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "71c9e37483da0d198df8bd194ad927f8340b7cfe40ab63cf3ce1dcd9d2a2904d"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_Runtime.ir.txt
index 863496486a1..5fb10616cde 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CodeBlock_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [115] CodeBlock.cshtml)
                     LazyIntermediateToken - (2:0,2 [115] CodeBlock.cshtml) - CSharp - \n    for(int i = 1; i <= 10; i++) {\n        Output.Write("<p>Hello from C#, #" + i.ToString() + "</p>");\n    }\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.codegen.cs
index 0764134d992..9ee02ac7722 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.ir.txt
index 5629bcc9adb..37adc76a699 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.mappings.txt
index 084d1f475d6..1e00f4f822d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_DesignTime.mappings.txt
@@ -1,6 +1,6 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1901:34,37 [17] )
+Generated Location: (1927:34,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (36:2,1 [52] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
@@ -9,7 +9,7 @@ Source Location: (36:2,1 [52] TestFiles/IntegrationTests/CodeGenerationIntegrati
     var checkbox = "checkbox";
 
     |
-Generated Location: (2408:51,1 [52] )
+Generated Location: (2434:51,1 [52] )
 |if (true)
 {
     var checkbox = "checkbox";
@@ -18,39 +18,39 @@ Generated Location: (2408:51,1 [52] )
 
 Source Location: (147:7,16 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |@|
-Generated Location: (2752:63,33 [1] )
+Generated Location: (2778:63,33 [1] )
 |@|
 
 Source Location: (149:7,18 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 ||
-Generated Location: (2753:63,34 [0] )
+Generated Location: (2779:63,34 [0] )
 ||
 
 Source Location: (149:7,18 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |@|
-Generated Location: (2753:63,34 [1] )
+Generated Location: (2779:63,34 [1] )
 |@|
 
 Source Location: (150:7,19 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |(|
-Generated Location: (2754:63,35 [1] )
+Generated Location: (2780:63,35 [1] )
 |(|
 
 Source Location: (151:7,20 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |1+2|
-Generated Location: (2755:63,36 [3] )
+Generated Location: (2781:63,36 [3] )
 |1+2|
 
 Source Location: (154:7,23 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |)|
-Generated Location: (2758:63,39 [1] )
+Generated Location: (2784:63,39 [1] )
 |)|
 
 Source Location: (273:10,13 [43] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |if (false)
             {
                 |
-Generated Location: (3014:71,13 [43] )
+Generated Location: (3040:71,13 [43] )
 |if (false)
             {
                 |
@@ -61,7 +61,7 @@ Source Location: (399:12,99 [66] TestFiles/IntegrationTests/CodeGenerationIntegr
             else
             {
                 |
-Generated Location: (3924:87,99 [66] )
+Generated Location: (3950:87,99 [66] )
 |
             }
             else
@@ -70,159 +70,159 @@ Generated Location: (3924:87,99 [66] )
 
 Source Location: (495:16,46 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |checkbox|
-Generated Location: (4409:100,46 [8] )
+Generated Location: (4435:100,46 [8] )
 |checkbox|
 
 Source Location: (512:16,63 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |true|
-Generated Location: (4800:109,63 [4] )
+Generated Location: (4826:109,63 [4] )
 |true|
 
 Source Location: (523:16,74 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |
                 |
-Generated Location: (5291:119,74 [18] )
+Generated Location: (5317:119,74 [18] )
 |
                 |
 
 Source Location: (556:17,31 [30] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |true ? "checkbox" : "anything"|
-Generated Location: (5713:129,31 [30] )
+Generated Location: (5739:129,31 [30] )
 |true ? "checkbox" : "anything"|
 
 Source Location: (591:17,66 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |
                 |
-Generated Location: (6205:139,66 [18] )
+Generated Location: (6231:139,66 [18] )
 |
                 |
 
 Source Location: (623:18,30 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |if(true) { |
-Generated Location: (6626:149,30 [11] )
+Generated Location: (6652:149,30 [11] )
 |if(true) { |
 
 Source Location: (655:18,62 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 | } else { |
-Generated Location: (6864:156,62 [10] )
+Generated Location: (6890:156,62 [10] )
 | } else { |
 
 Source Location: (686:18,93 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 | }|
-Generated Location: (7132:163,93 [2] )
+Generated Location: (7158:163,93 [2] )
 | }|
 
 Source Location: (690:18,97 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |
             }|
-Generated Location: (7626:173,97 [15] )
+Generated Location: (7652:173,97 [15] )
 |
             }|
 
 Source Location: (212:8,32 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |DateTime.Now|
-Generated Location: (7932:182,32 [12] )
+Generated Location: (7958:182,32 [12] )
 |DateTime.Now|
 
 Source Location: (832:22,14 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 | var @object = false;|
-Generated Location: (8200:190,14 [21] )
+Generated Location: (8226:190,14 [21] )
 | var @object = false;|
 
 Source Location: (885:23,29 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |(|
-Generated Location: (8636:199,42 [1] )
+Generated Location: (8662:199,42 [1] )
 |(|
 
 Source Location: (886:23,30 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |@object|
-Generated Location: (8637:199,43 [7] )
+Generated Location: (8663:199,43 [7] )
 |@object|
 
 Source Location: (893:23,37 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |)|
-Generated Location: (8644:199,50 [1] )
+Generated Location: (8670:199,50 [1] )
 |)|
 
 Source Location: (760:21,39 [30] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |DateTimeOffset.Now.Year - 1970|
-Generated Location: (9020:208,38 [30] )
+Generated Location: (9046:208,38 [30] )
 |DateTimeOffset.Now.Year - 1970|
 
 Source Location: (1025:26,61 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |(|
-Generated Location: (9560:218,60 [1] )
+Generated Location: (9586:218,60 [1] )
 |(|
 
 Source Location: (1026:26,62 [30] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |DateTimeOffset.Now.Year > 2014|
-Generated Location: (9561:218,61 [30] )
+Generated Location: (9587:218,61 [30] )
 |DateTimeOffset.Now.Year > 2014|
 
 Source Location: (1056:26,92 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |)|
-Generated Location: (9591:218,91 [1] )
+Generated Location: (9617:218,91 [1] )
 |)|
 
 Source Location: (928:25,16 [32] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |-1970 + @DateTimeOffset.Now.Year|
-Generated Location: (9962:227,33 [32] )
+Generated Location: (9988:227,33 [32] )
 |-1970 + @DateTimeOffset.Now.Year|
 
 Source Location: (1155:29,28 [30] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |DateTimeOffset.Now.Year > 2014|
-Generated Location: (10486:237,42 [30] )
+Generated Location: (10512:237,42 [30] )
 |DateTimeOffset.Now.Year > 2014|
 
 Source Location: (1093:28,16 [30] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |DateTimeOffset.Now.Year - 1970|
-Generated Location: (10886:246,33 [30] )
+Generated Location: (10912:246,33 [30] )
 |DateTimeOffset.Now.Year - 1970|
 
 Source Location: (1283:32,28 [43] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |   @(  DateTimeOffset.Now.Year  ) > 2014   |
-Generated Location: (11408:256,42 [43] )
+Generated Location: (11434:256,42 [43] )
 |   @(  DateTimeOffset.Now.Year  ) > 2014   |
 
 Source Location: (1220:31,17 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |(|
-Generated Location: (11821:265,33 [1] )
+Generated Location: (11847:265,33 [1] )
 |(|
 
 Source Location: (1221:31,18 [29] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |"My age is this long.".Length|
-Generated Location: (11822:265,34 [29] )
+Generated Location: (11848:265,34 [29] )
 |"My age is this long.".Length|
 
 Source Location: (1250:31,47 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |)|
-Generated Location: (11851:265,63 [1] )
+Generated Location: (11877:265,63 [1] )
 |)|
 
 Source Location: (1355:34,9 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |someMethod(|
-Generated Location: (12103:273,9 [11] )
+Generated Location: (12129:273,9 [11] )
 |someMethod(|
 
 Source Location: (1410:34,64 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |checked|
-Generated Location: (12583:278,63 [7] )
+Generated Location: (12609:278,63 [7] )
 |checked|
 
 Source Location: (1375:34,29 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |123|
-Generated Location: (12944:287,33 [3] )
+Generated Location: (12970:287,33 [3] )
 |123|
 
 Source Location: (1424:34,78 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |)|
-Generated Location: (13072:294,1 [1] )
+Generated Location: (13098:294,1 [1] )
 |)|
 
 Source Location: (1469:36,10 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml)
 |
 }|
-Generated Location: (13619:310,10 [3] )
+Generated Location: (13645:310,10 [3] )
 |
 }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_Runtime.codegen.cs
index 513c0353eae..2231a483d54 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "1f3b8300659fe8a9bf41b8b1b87fbc9ea296962d88df30817150779b3823b339"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", "text", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_Runtime.ir.txt
index 43dfcf928a3..dffaa409027 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ComplexTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ComplexTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - type - text - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - value -  - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - placeholder - Enter in a new time... - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.codegen.cs
index d91b68b31f0..d8e2ad4f31a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.ir.txt
index 1e6a91531c1..652d1a3c1a8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.UrlResolutionTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_UrlResolutionTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.mappings.txt
index 6351ea88ec2..d5cd59517f6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_DesignTime.mappings.txt
@@ -4,7 +4,7 @@
     var cls = "bar";
     var s = "str";
     |
-Generated Location: (2043:39,2 [68] )
+Generated Location: (2069:39,2 [68] )
 |
     var ch = true;
     var cls = "bar";
@@ -13,260 +13,260 @@ Generated Location: (2043:39,2 [68] )
 
 Source Location: (74:4,8 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (2288:50,8 [1] )
+Generated Location: (2314:50,8 [1] )
 |s|
 
 Source Location: (87:4,21 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (2480:57,21 [6] )
+Generated Location: (2506:57,21 [6] )
 |
     |
 
 Source Location: (97:5,8 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (2663:65,8 [1] )
+Generated Location: (2689:65,8 [1] )
 |s|
 
 Source Location: (107:5,18 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |cls|
-Generated Location: (2852:72,18 [3] )
+Generated Location: (2878:72,18 [3] )
 |cls|
 
 Source Location: (114:5,25 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (3050:79,25 [6] )
+Generated Location: (3076:79,25 [6] )
 |
     |
 
 Source Location: (124:6,8 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (3233:87,8 [1] )
+Generated Location: (3259:87,8 [1] )
 |s|
 
 Source Location: (136:6,20 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |cls|
-Generated Location: (3424:94,20 [3] )
+Generated Location: (3450:94,20 [3] )
 |cls|
 
 Source Location: (143:6,27 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (3624:101,27 [6] )
+Generated Location: (3650:101,27 [6] )
 |
     |
 
 Source Location: (153:7,8 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (3807:109,8 [1] )
+Generated Location: (3833:109,8 [1] )
 |s|
 
 Source Location: (163:7,18 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |cls|
-Generated Location: (3996:116,18 [3] )
+Generated Location: (4022:116,18 [3] )
 |cls|
 
 Source Location: (172:7,27 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (4196:123,27 [6] )
+Generated Location: (4222:123,27 [6] )
 |
     |
 
 Source Location: (202:8,28 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (4399:131,28 [1] )
+Generated Location: (4425:131,28 [1] )
 |s|
 
 Source Location: (214:8,40 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |ch|
-Generated Location: (4610:138,40 [2] )
+Generated Location: (4636:138,40 [2] )
 |ch|
 
 Source Location: (220:8,46 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (4828:145,46 [6] )
+Generated Location: (4854:145,46 [6] )
 |
     |
 
 Source Location: (250:9,28 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (5032:153,28 [1] )
+Generated Location: (5058:153,28 [1] )
 |s|
 
 Source Location: (264:9,42 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |ch|
-Generated Location: (5246:160,42 [2] )
+Generated Location: (5272:160,42 [2] )
 |ch|
 
 Source Location: (270:9,48 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (5467:167,48 [6] )
+Generated Location: (5493:167,48 [6] )
 |
     |
 
 Source Location: (280:10,8 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (5651:175,8 [1] )
+Generated Location: (5677:175,8 [1] )
 |s|
 
 Source Location: (290:10,18 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |if(cls != null) { |
-Generated Location: (5841:182,18 [18] )
+Generated Location: (5867:182,18 [18] )
 |if(cls != null) { |
 
 Source Location: (309:10,37 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |cls|
-Generated Location: (6066:189,37 [3] )
+Generated Location: (6092:189,37 [3] )
 |cls|
 
 Source Location: (312:10,40 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 | }|
-Generated Location: (6280:196,40 [2] )
+Generated Location: (6306:196,40 [2] )
 | }|
 
 Source Location: (318:10,46 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (6498:203,46 [6] )
+Generated Location: (6524:203,46 [6] )
 |
     |
 
 Source Location: (343:11,23 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (6948:213,23 [6] )
+Generated Location: (6974:213,23 [6] )
 |
     |
 
 Source Location: (358:12,13 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (7137:221,13 [1] )
+Generated Location: (7163:221,13 [1] )
 |s|
 
 Source Location: (366:12,21 [44] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |Url.Content("~/Scripts/jquery-1.6.2.min.js")|
-Generated Location: (7330:228,21 [44] )
+Generated Location: (7356:228,21 [44] )
 |Url.Content("~/Scripts/jquery-1.6.2.min.js")|
 
 Source Location: (444:12,99 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (7644:235,99 [6] )
+Generated Location: (7670:235,99 [6] )
 |
     |
 
 Source Location: (454:13,8 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (7828:243,8 [1] )
+Generated Location: (7854:243,8 [1] )
 |s|
 
 Source Location: (464:13,18 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |null|
-Generated Location: (8018:250,18 [4] )
+Generated Location: (8044:250,18 [4] )
 |null|
 
 Source Location: (472:13,26 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (8219:257,26 [6] )
+Generated Location: (8245:257,26 [6] )
 |
     |
 
 Source Location: (489:14,15 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |null|
-Generated Location: (8410:265,15 [4] )
+Generated Location: (8436:265,15 [4] )
 |null|
 
 Source Location: (496:14,22 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (8607:272,22 [1] )
+Generated Location: (8633:272,22 [1] )
 |s|
 
 Source Location: (500:14,26 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
 
     |
-Generated Location: (8805:279,26 [8] )
+Generated Location: (8831:279,26 [8] )
 |
 
     |
 
 Source Location: (526:16,22 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (9005:288,22 [1] )
+Generated Location: (9031:288,22 [1] )
 |s|
 
 Source Location: (536:16,32 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |null|
-Generated Location: (9209:295,32 [4] )
+Generated Location: (9235:295,32 [4] )
 |null|
 
 Source Location: (547:16,43 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
 
     |
-Generated Location: (9427:302,43 [8] )
+Generated Location: (9453:302,43 [8] )
 |
 
     |
 
 Source Location: (560:18,9 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s + s|
-Generated Location: (9614:311,9 [5] )
+Generated Location: (9640:311,9 [5] )
 |s + s|
 
 Source Location: (575:18,24 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |null|
-Generated Location: (9814:318,24 [4] )
+Generated Location: (9840:318,24 [4] )
 |null|
 
 Source Location: (586:18,35 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (10024:325,35 [6] )
+Generated Location: (10050:325,35 [6] )
 |
     |
 
 Source Location: (597:19,9 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |if (s.Length != 0) { |
-Generated Location: (10209:333,9 [21] )
+Generated Location: (10235:333,9 [21] )
 |if (s.Length != 0) { |
 
 Source Location: (619:19,31 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |s|
-Generated Location: (10431:340,31 [1] )
+Generated Location: (10457:340,31 [1] )
 |s|
 
 Source Location: (620:19,32 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 | }|
-Generated Location: (10635:347,32 [2] )
+Generated Location: (10661:347,32 [2] )
 | }|
 
 Source Location: (632:19,44 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |null|
-Generated Location: (10851:354,44 [4] )
+Generated Location: (10877:354,44 [4] )
 |null|
 
 Source Location: (643:19,55 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
     |
-Generated Location: (11081:361,55 [6] )
+Generated Location: (11107:361,55 [6] )
 |
     |
 
 Source Location: (664:20,19 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |null|
-Generated Location: (11276:369,19 [4] )
+Generated Location: (11302:369,19 [4] )
 |null|
 
 Source Location: (675:20,30 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml)
 |
 |
-Generated Location: (11481:376,30 [2] )
+Generated Location: (11507:376,30 [2] )
 |
 |
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_Runtime.codegen.cs
index bfdfcbda387..153ac8d223e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "ee976c57374bafda343bd6b2086b223381f842016566d5a83498a6d0cbec2f54"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2 : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_Runtime.ir.txt
index a3910916ddd..3d7276f2fd7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes2_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes2 - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.UrlResolutionTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_UrlResolutionTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.codegen.cs
index 569b502fc05..4718cc66817 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.ir.txt
index bcdf748d694..a4919b59b3c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.UrlResolutionTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_UrlResolutionTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.mappings.txt
index 46e2d14236f..5f732519386 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_DesignTime.mappings.txt
@@ -3,7 +3,7 @@
     var ch = true;
     var cls = "bar";
     |
-Generated Location: (2040:39,2 [48] )
+Generated Location: (2066:39,2 [48] )
 |
     var ch = true;
     var cls = "bar";
@@ -12,139 +12,139 @@ Generated Location: (2040:39,2 [48] )
 Source Location: (66:3,20 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (2276:49,20 [6] )
+Generated Location: (2302:49,20 [6] )
 |
     |
 
 Source Location: (83:4,15 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |cls|
-Generated Location: (2465:57,15 [3] )
+Generated Location: (2491:57,15 [3] )
 |cls|
 
 Source Location: (90:4,22 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (2659:64,22 [6] )
+Generated Location: (2685:64,22 [6] )
 |
     |
 
 Source Location: (111:5,19 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |cls|
-Generated Location: (2852:72,19 [3] )
+Generated Location: (2878:72,19 [3] )
 |cls|
 
 Source Location: (118:5,26 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (3050:79,26 [6] )
+Generated Location: (3076:79,26 [6] )
 |
     |
 
 Source Location: (135:6,15 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |cls|
-Generated Location: (3239:87,15 [3] )
+Generated Location: (3265:87,15 [3] )
 |cls|
 
 Source Location: (146:6,26 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (3437:94,26 [6] )
+Generated Location: (3463:94,26 [6] )
 |
     |
 
 Source Location: (185:7,37 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |ch|
-Generated Location: (3648:102,37 [2] )
+Generated Location: (3674:102,37 [2] )
 |ch|
 
 Source Location: (191:7,43 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (3862:109,43 [6] )
+Generated Location: (3888:109,43 [6] )
 |
     |
 
 Source Location: (234:8,41 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |ch|
-Generated Location: (4077:117,41 [2] )
+Generated Location: (4103:117,41 [2] )
 |ch|
 
 Source Location: (240:8,47 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (4295:124,47 [6] )
+Generated Location: (4321:124,47 [6] )
 |
     |
 
 Source Location: (257:9,15 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |if(cls != null) { |
-Generated Location: (4485:132,15 [18] )
+Generated Location: (4511:132,15 [18] )
 |if(cls != null) { |
 
 Source Location: (276:9,34 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |cls|
-Generated Location: (4706:139,34 [3] )
+Generated Location: (4732:139,34 [3] )
 |cls|
 
 Source Location: (279:9,37 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 | }|
-Generated Location: (4916:146,37 [2] )
+Generated Location: (4942:146,37 [2] )
 | }|
 
 Source Location: (285:9,43 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (5130:153,43 [6] )
+Generated Location: (5156:153,43 [6] )
 |
     |
 
 Source Location: (309:10,22 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (5578:163,22 [6] )
+Generated Location: (5604:163,22 [6] )
 |
     |
 
 Source Location: (329:11,18 [44] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |Url.Content("~/Scripts/jquery-1.6.2.min.js")|
-Generated Location: (5771:171,18 [44] )
+Generated Location: (5797:171,18 [44] )
 |Url.Content("~/Scripts/jquery-1.6.2.min.js")|
 
 Source Location: (407:11,96 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (6081:178,96 [6] )
+Generated Location: (6107:178,96 [6] )
 |
     |
 
 Source Location: (427:12,18 [60] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |Url.Content("~/Scripts/modernizr-2.0.6-development-only.js")|
-Generated Location: (6274:186,18 [60] )
+Generated Location: (6300:186,18 [60] )
 |Url.Content("~/Scripts/modernizr-2.0.6-development-only.js")|
 
 Source Location: (521:12,112 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (6616:193,112 [6] )
+Generated Location: (6642:193,112 [6] )
 |
     |
 
 Source Location: (638:13,115 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
     |
-Generated Location: (6906:201,115 [6] )
+Generated Location: (6932:201,115 [6] )
 |
     |
 
 Source Location: (655:14,15 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |null|
-Generated Location: (7096:209,15 [4] )
+Generated Location: (7122:209,15 [4] )
 |null|
 
 Source Location: (663:14,23 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml)
 |
 |
-Generated Location: (7293:216,23 [2] )
+Generated Location: (7319:216,23 [2] )
 |
 |
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_Runtime.codegen.cs
index c1bbb67fd09..7352b7eef17 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "ea68cb71b106404af0072bb70c04f6d73d165cf4aabc5d838b668d681625b53c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("href", new global::Microsoft.AspNetCore.Html.HtmlString("~/Foo"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_Runtime.ir.txt
index 5e343b65339..5537c044784 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ConditionalAttributes_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ConditionalAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - href - ~/Foo - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.UrlResolutionTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_UrlResolutionTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.codegen.cs
index 6b8b6332059..460df69b0ac 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.ir.txt
index d1e1b7b2bbb..a41230d2a4c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.ATagHelper - __TestNamespace_ATagHelper
             FieldDeclaration -  - private - global::TestNamespace.CatchAllTagHelper - __TestNamespace_CatchAllTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.mappings.txt
index c9ac98daec0..45c8500c3a6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes.cshtml)
 |"*, TestAssembly"|
-Generated Location: (2238:37,37 [17] )
+Generated Location: (2264:37,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (156:5,12 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes.cshtml)
 |false|
-Generated Location: (3786:64,12 [5] )
+Generated Location: (3812:64,12 [5] )
 |false|
 
 Source Location: (237:7,11 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes.cshtml)
 |false|
-Generated Location: (4165:73,11 [5] )
+Generated Location: (4191:73,11 [5] )
 |false|
 
 Source Location: (333:9,25 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes.cshtml)
 |false|
-Generated Location: (4744:84,25 [5] )
+Generated Location: (4770:84,25 [5] )
 |false|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_Runtime.codegen.cs
index 42a9dffd1e3..57b193b8358 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "b0b4eb8b8ddbffa2284ca831845a2ffaacd3d0599bf4242794848b4210903a3b"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("href", new global::Microsoft.AspNetCore.Html.HtmlString("~/"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_Runtime.ir.txt
index 3468d006363..3800a207ac7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/CssSelectorTagHelperAttributes_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_CssSelectorTagHelperAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - href - ~/ - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - href - ~/hello - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - href - ~/?hello=world - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.codegen.cs
index 0cee17ac0f8..dd6691489c0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.ir.txt
index 869b681ff3f..8f81b39d924 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.mappings.txt
index 90e59b7be2d..e2c5e7cf3dc 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_DesignTime.mappings.txt
@@ -1,49 +1,49 @@
 Source Location: (173:11,9 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml)
 |Footer|
-Generated Location: (1206:26,22 [6] )
+Generated Location: (1232:26,22 [6] )
 |Footer|
 
 Source Location: (20:1,13 [36] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml)
 |for(int i = 1; i <= 10; i++) {
     |
-Generated Location: (1715:43,13 [36] )
+Generated Location: (1741:43,13 [36] )
 |for(int i = 1; i <= 10; i++) {
     |
 
 Source Location: (74:2,22 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml)
 |i|
-Generated Location: (1930:51,22 [1] )
+Generated Location: (1956:51,22 [1] )
 |i|
 
 Source Location: (79:2,27 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml)
 |
             }|
-Generated Location: (2116:58,27 [15] )
+Generated Location: (2142:58,27 [15] )
 |
             }|
 
 Source Location: (113:7,2 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml)
 |Foo(Bar.Baz)|
-Generated Location: (2294:66,6 [12] )
+Generated Location: (2320:66,6 [12] )
 |Foo(Bar.Baz)|
 
 Source Location: (129:8,1 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml)
 |Foo(|
-Generated Location: (2470:73,6 [4] )
+Generated Location: (2496:73,6 [4] )
 |Foo(|
 
 Source Location: (142:8,14 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml)
 |baz|
-Generated Location: (2694:76,14 [3] )
+Generated Location: (2720:76,14 [3] )
 |baz|
 
 Source Location: (153:8,25 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml)
 |)|
-Generated Location: (2754:82,1 [1] )
+Generated Location: (2780:82,1 [1] )
 |)|
 
 Source Location: (204:13,5 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml)
 |bar|
-Generated Location: (2992:90,6 [3] )
+Generated Location: (3018:90,6 [3] )
 |bar|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_Runtime.codegen.cs
index 3e4d5adae63..38d5316861c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "81bc9372da7d25ed6342dfd5b1067004013e6b4791921ce725e71f4c9eb90f85"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_Runtime.ir.txt
index bcade08ec7c..d9c96bec741 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DesignTime_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DesignTime - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [7] DesignTime.cshtml)
                     LazyIntermediateToken - (0:0,0 [4] DesignTime.cshtml) - Html - <div
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.codegen.cs
index 11e1dbc9017..25d79e0e5a3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.ir.txt
index d9f2bbc2f60..0c716bae0fa 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.mappings.txt
index 9fa8793cc23..8f0e77bc16c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1934:34,37 [17] )
+Generated Location: (1960:34,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (146:4,34 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers.cshtml)
 |true|
-Generated Location: (3285:60,42 [4] )
+Generated Location: (3311:60,42 [4] )
 |true|
 
 Source Location: (222:5,34 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers.cshtml)
 |true|
-Generated Location: (3941:72,42 [4] )
+Generated Location: (3967:72,42 [4] )
 |true|
 
 Source Location: (43:2,8 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers.cshtml)
 |3|
-Generated Location: (4325:81,33 [1] )
+Generated Location: (4351:81,33 [1] )
 |3|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_Runtime.codegen.cs
index 02d1285c41e..2535b9757c7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "d45c3cbf5538f23158a297cf78d066fb3d191fc8c062d4e8879f387591564a6b"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", "button", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_Runtime.ir.txt
index 574b02ba84b..19d2527db62 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateAttributeTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - type - button - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - TYPE - checkbox - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - type - checkbox - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.codegen.cs
index a943f1ac1d7..1a68fb4fde6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.ir.txt
index c152eb2adf9..fb07d41cd6c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
             FieldDeclaration -  - private - global::TestNamespace.CatchAllTagHelper - __TestNamespace_CatchAllTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.mappings.txt
index 484e1c1bd98..ed02bd13a35 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1848:33,37 [17] )
+Generated Location: (1874:33,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (67:2,32 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper.cshtml)
 |true|
-Generated Location: (2768:54,41 [4] )
+Generated Location: (2794:54,41 [4] )
 |true|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_Runtime.codegen.cs
index 9187b068bd6..e9136ccf8e3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "739b3bb42f48ad64d3010068758f57fb6fd25db64a98ab4b4ebd02099e856a56"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", "checkbox", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_Runtime.ir.txt
index 4c64ca624b4..f65e29ebcdd 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DuplicateTargetTagHelper_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DuplicateTargetTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - type - checkbox - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.codegen.cs
index ec0a31f34c0..e705fa17878 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.ir.txt
index 446cdaa397b..df9640abd44 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.mappings.txt
index fbb4920baee..82ee2fb1c8a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_DesignTime.mappings.txt
@@ -1,155 +1,155 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1762:32,37 [17] )
+Generated Location: (1788:32,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (59:2,24 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |DateTime.Now|
-Generated Location: (2404:50,24 [12] )
+Generated Location: (2430:50,24 [12] )
 |DateTime.Now|
 
 Source Location: (96:4,17 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |if (true) { |
-Generated Location: (2786:59,17 [12] )
+Generated Location: (2812:59,17 [12] )
 |if (true) { |
 
 Source Location: (109:4,30 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |string.Empty|
-Generated Location: (3001:66,30 [12] )
+Generated Location: (3027:66,30 [12] )
 |string.Empty|
 
 Source Location: (121:4,42 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 | } else { |
-Generated Location: (3229:73,42 [10] )
+Generated Location: (3255:73,42 [10] )
 | } else { |
 
 Source Location: (132:4,53 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |false|
-Generated Location: (3465:80,53 [5] )
+Generated Location: (3491:80,53 [5] )
 |false|
 
 Source Location: (137:4,58 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 | }|
-Generated Location: (3702:87,58 [2] )
+Generated Location: (3728:87,58 [2] )
 | }|
 
 Source Location: (176:6,22 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |DateTime.Now|
-Generated Location: (4078:96,22 [12] )
+Generated Location: (4104:96,22 [12] )
 |DateTime.Now|
 
 Source Location: (214:6,60 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |DateTime.Now|
-Generated Location: (4390:104,60 [12] )
+Generated Location: (4416:104,60 [12] )
 |DateTime.Now|
 
 Source Location: (256:8,15 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |long.MinValue|
-Generated Location: (4770:113,15 [13] )
+Generated Location: (4796:113,15 [13] )
 |long.MinValue|
 
 Source Location: (271:8,30 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |if (true) { |
-Generated Location: (4987:120,30 [12] )
+Generated Location: (5013:120,30 [12] )
 |if (true) { |
 
 Source Location: (284:8,43 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |string.Empty|
-Generated Location: (5215:127,43 [12] )
+Generated Location: (5241:127,43 [12] )
 |string.Empty|
 
 Source Location: (296:8,55 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 | } else { |
-Generated Location: (5456:134,55 [10] )
+Generated Location: (5482:134,55 [10] )
 | } else { |
 
 Source Location: (307:8,66 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |false|
-Generated Location: (5705:141,66 [5] )
+Generated Location: (5731:141,66 [5] )
 |false|
 
 Source Location: (312:8,71 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 | }|
-Generated Location: (5955:148,71 [2] )
+Generated Location: (5981:148,71 [2] )
 | }|
 
 Source Location: (316:8,75 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |int.MaxValue|
-Generated Location: (6205:155,75 [12] )
+Generated Location: (6231:155,75 [12] )
 |int.MaxValue|
 
 Source Location: (348:9,17 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |long.MinValue|
-Generated Location: (6475:163,17 [13] )
+Generated Location: (6501:163,17 [13] )
 |long.MinValue|
 
 Source Location: (363:9,32 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |if (true) { |
-Generated Location: (6695:170,32 [12] )
+Generated Location: (6721:170,32 [12] )
 |if (true) { |
 
 Source Location: (376:9,45 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |string.Empty|
-Generated Location: (6926:177,45 [12] )
+Generated Location: (6952:177,45 [12] )
 |string.Empty|
 
 Source Location: (388:9,57 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 | } else { |
-Generated Location: (7170:184,57 [10] )
+Generated Location: (7196:184,57 [10] )
 | } else { |
 
 Source Location: (399:9,68 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |false|
-Generated Location: (7422:191,68 [5] )
+Generated Location: (7448:191,68 [5] )
 |false|
 
 Source Location: (404:9,73 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 | }|
-Generated Location: (7675:198,73 [2] )
+Generated Location: (7701:198,73 [2] )
 | }|
 
 Source Location: (408:9,77 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |int.MaxValue|
-Generated Location: (7928:205,77 [12] )
+Generated Location: (7954:205,77 [12] )
 |int.MaxValue|
 
 Source Location: (445:11,17 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |long.MinValue|
-Generated Location: (8311:214,17 [13] )
+Generated Location: (8337:214,17 [13] )
 |long.MinValue|
 
 Source Location: (460:11,32 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |DateTime.Now|
-Generated Location: (8531:221,32 [12] )
+Generated Location: (8557:221,32 [12] )
 |DateTime.Now|
 
 Source Location: (492:11,64 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |int.MaxValue|
-Generated Location: (8782:228,64 [12] )
+Generated Location: (8808:228,64 [12] )
 |int.MaxValue|
 
 Source Location: (529:13,17 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |if (true) { |
-Generated Location: (9165:237,17 [12] )
+Generated Location: (9191:237,17 [12] )
 |if (true) { |
 
 Source Location: (542:13,30 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |string.Empty|
-Generated Location: (9381:244,30 [12] )
+Generated Location: (9407:244,30 [12] )
 |string.Empty|
 
 Source Location: (554:13,42 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 | } else { |
-Generated Location: (9610:251,42 [10] )
+Generated Location: (9636:251,42 [10] )
 | } else { |
 
 Source Location: (565:13,53 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 |false|
-Generated Location: (9847:258,53 [5] )
+Generated Location: (9873:258,53 [5] )
 |false|
 
 Source Location: (570:13,58 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml)
 | }|
-Generated Location: (10085:265,58 [2] )
+Generated Location: (10111:265,58 [2] )
 | }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_Runtime.codegen.cs
index 151e828a910..81377e037e7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "4c214203eb338caf0f877accd57cbda70c9002c9f35b3b48b9bdecc4811fdc6b"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_Runtime.ir.txt
index b7fcc6f58bf..267b78e1983 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/DynamicAttributeTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_DynamicAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.codegen.cs
index 226b64fc72f..28908b71ba5 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.ir.txt
index 904b2f9d7c2..4dbc2c08726 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper2 - __TestNamespace_InputTagHelper2
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.mappings.txt
index 958efd00e64..76535bef739 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (14:0,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers.cshtml)
 |*, TestAssembly|
-Generated Location: (1923:34,38 [15] )
+Generated Location: (1949:34,38 [15] )
 |*, TestAssembly|
 
 Source Location: (66:3,26 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers.cshtml)
 ||
-Generated Location: (2829:55,42 [0] )
+Generated Location: (2855:55,42 [0] )
 ||
 
 Source Location: (126:5,30 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers.cshtml)
 ||
-Generated Location: (3471:67,42 [0] )
+Generated Location: (3497:67,42 [0] )
 ||
 
 Source Location: (92:4,12 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers.cshtml)
 ||
-Generated Location: (3847:76,33 [0] )
+Generated Location: (3873:76,33 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_Runtime.codegen.cs
index 172586535bc..47532ab4c99 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "c4d761efb25f1145e3bafb0566e5b4889a0d28f01dcbeaa9f36bce4ee9cc026d"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", "", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_Runtime.ir.txt
index 8576c78b969..703dc6dde0b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyAttributeTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - type -  - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - class -  - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.codegen.cs
index 5bea3a23350..550c145c6a2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.ir.txt
index 461556fa047..93e01fddb1b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.mappings.txt
index e6735cb40f1..e636f88cf1c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (20:2,2 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock.cshtml)
 ||
-Generated Location: (1453:33,2 [0] )
+Generated Location: (1479:33,2 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_Runtime.codegen.cs
index e4108a2bec7..2c439670fa6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "16b0a230405bddf39e1d1cb49449db91ec2b2ebc7f619f5f3ae013391cc2307f"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_Runtime.ir.txt
index 01291b49098..e427287c554 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyCodeBlock_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyCodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [18] EmptyCodeBlock.cshtml)
                     LazyIntermediateToken - (0:0,0 [18] EmptyCodeBlock.cshtml) - Html - This is markup\n\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.codegen.cs
index 6cab863c365..639b66b487d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.ir.txt
index 8e71bfcab23..29bcd1fe25f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.mappings.txt
index 3819be7ae9e..71c7b3da6cd 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (20:2,2 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression.cshtml)
 ||
-Generated Location: (1484:33,6 [0] )
+Generated Location: (1510:33,6 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_Runtime.codegen.cs
index 3885320435c..5da11f24b59 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "004fdbe7564de7fa0982c2502bef8fedcb3d887b445c425221784d3402ab9a19"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_Runtime.ir.txt
index 9f1792bdc67..b6249f71638 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyExplicitExpression_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyExplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [18] EmptyExplicitExpression.cshtml)
                     LazyIntermediateToken - (0:0,0 [18] EmptyExplicitExpression.cshtml) - Html - This is markup\n\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.codegen.cs
index 54002fc43c8..9d5c0d4c77a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.ir.txt
index 5cd13e99059..22ad9da3b97 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.mappings.txt
index 9147bf1a63d..a3e71fbcd1b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_DesignTime.mappings.txt
@@ -1,19 +1,19 @@
 Source Location: (2:0,2 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode.cshtml)
 |
     |
-Generated Location: (1498:33,2 [6] )
+Generated Location: (1524:33,2 [6] )
 |
     |
 
 Source Location: (9:1,5 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode.cshtml)
 ||
-Generated Location: (1686:41,6 [0] )
+Generated Location: (1712:41,6 [0] )
 ||
 
 Source Location: (9:1,5 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode.cshtml)
 |
 |
-Generated Location: (1868:48,5 [2] )
+Generated Location: (1894:48,5 [2] )
 |
 |
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_Runtime.codegen.cs
index 05789d9df8d..caec95f7a73 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "af161186fc847e3b1cff0dd7b9c1f0535ff384409c6559dbf0799a8c3407d342"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_Runtime.ir.txt
index 0b72a52b1b2..11f58107e2c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpressionInCode_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpressionInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [6] EmptyImplicitExpressionInCode.cshtml)
                     LazyIntermediateToken - (2:0,2 [6] EmptyImplicitExpressionInCode.cshtml) - CSharp - \n    
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.codegen.cs
index 2d5fcca8d19..92fafd86bd2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.ir.txt
index d2e8477cebc..f328d60f2e7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.mappings.txt
index faf46353bbc..618f7b466d0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (19:2,1 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression.cshtml)
 ||
-Generated Location: (1484:33,6 [0] )
+Generated Location: (1510:33,6 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_Runtime.codegen.cs
index 40120aee815..195230c8308 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "9af7ee6893210f3b4ab21bd93a76eaed1540b45b34c6ccbef4c980fd5f3c9f8c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_Runtime.ir.txt
index 35e11fc00c0..ee8555695bf 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EmptyImplicitExpression_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EmptyImplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [18] EmptyImplicitExpression.cshtml)
                     LazyIntermediateToken - (0:0,0 [18] EmptyImplicitExpression.cshtml) - Html - This is markup\n\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.codegen.cs
index 9e17c235572..c3faf60048d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.ir.txt
index 682576e5ec7..3bd1127535b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
             FieldDeclaration -  - private - global::TestNamespace.CatchAllTagHelper - __TestNamespace_CatchAllTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.mappings.txt
index 6784cb1636d..723af2531c7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_DesignTime.mappings.txt
@@ -1,49 +1,49 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1818:33,37 [17] )
+Generated Location: (1844:33,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (37:2,2 [39] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml)
 |
     var enumValue = MyEnum.MyValue;
 |
-Generated Location: (2323:50,2 [39] )
+Generated Location: (2349:50,2 [39] )
 |
     var enumValue = MyEnum.MyValue;
 |
 
 Source Location: (96:6,15 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml)
 |MyEnum.MyValue|
-Generated Location: (2772:60,39 [14] )
+Generated Location: (2798:60,39 [14] )
 |MyEnum.MyValue|
 
 Source Location: (131:7,15 [20] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml)
 |MyEnum.MySecondValue|
-Generated Location: (3251:70,15 [20] )
+Generated Location: (3277:70,15 [20] )
 |MyEnum.MySecondValue|
 
 Source Location: (171:8,14 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml)
 |MyValue|
-Generated Location: (3853:80,132 [7] )
+Generated Location: (3879:80,132 [7] )
 |MyValue|
 
 Source Location: (198:9,14 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml)
 |MySecondValue|
-Generated Location: (4443:90,132 [13] )
+Generated Location: (4469:90,132 [13] )
 |MySecondValue|
 
 Source Location: (224:9,40 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml)
 |MyValue|
-Generated Location: (4757:97,138 [7] )
+Generated Location: (4783:97,138 [7] )
 |MyValue|
 
 Source Location: (251:10,15 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml)
 |enumValue|
-Generated Location: (5254:107,39 [9] )
+Generated Location: (5280:107,39 [9] )
 |enumValue|
 
 Source Location: (274:10,38 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml)
 |enumValue|
-Generated Location: (5471:114,45 [9] )
+Generated Location: (5497:114,45 [9] )
 |enumValue|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_Runtime.codegen.cs
index 34161e8ccd5..232a196a398 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "77f2d2a6c05eb6fd6b50ca4e425c887ee527eddaca21ae01f7c0288ab53bff45"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_Runtime.ir.txt
index 8a79d57bf54..f5017c5096b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EnumTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EnumTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
             FieldDeclaration -  - private - global::TestNamespace.CatchAllTagHelper - __TestNamespace_CatchAllTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.codegen.cs
index 19702e4b4d3..51eea673edd 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.ir.txt
index 3ee270e2db6..5906dc0ac97 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.mappings.txt
index 83511484f63..ede2743a1c6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1707:32,37 [17] )
+Generated Location: (1733:32,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (48:2,13 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression.cshtml)
 |new string("1, 2")|
-Generated Location: (2315:50,27 [18] )
+Generated Location: (2341:50,27 [18] )
 |new string("1, 2")|
 
 Source Location: (84:3,12 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression.cshtml)
 |new string("1, 2")|
-Generated Location: (2676:59,27 [18] )
+Generated Location: (2702:59,27 [18] )
 |new string("1, 2")|
 
 Source Location: (120:4,12 [24] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression.cshtml)
 |"0" + new @String("1 2")|
-Generated Location: (3037:68,27 [24] )
+Generated Location: (3063:68,27 [24] )
 |"0" + new @String("1 2")|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_Runtime.codegen.cs
index c752c653108..4efc9b94f06 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "e4df6041980536333164e3380678ce837699cd137aff68cc9358167dcaafba83"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_Runtime.ir.txt
index edd8d1f9c18..fd56752764d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedExpression_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.codegen.cs
index cf4e5e36ebf..a419af478f5 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.ir.txt
index c6046b8773f..3d40be628b4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.mappings.txt
index f32e9f0cae4..22d6efb6abf 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_DesignTime.mappings.txt
@@ -1,6 +1,6 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1707:32,37 [17] )
+Generated Location: (1733:32,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (37:2,2 [163] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml)
@@ -10,7 +10,7 @@ Source Location: (37:2,2 [163] TestFiles/IntegrationTests/CodeGenerationIntegrat
     var obj = new { age = (object)1 };
     var item = new { Items = new System.List<string>() { "one", "two" } };
 |
-Generated Location: (2215:49,2 [163] )
+Generated Location: (2241:49,2 [163] )
 |
     var count = "1";
     var alive = true;
@@ -20,26 +20,26 @@ Generated Location: (2215:49,2 [163] )
 
 Source Location: (215:8,12 [23] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml)
 |Convert.ToInt32(@count)|
-Generated Location: (2642:61,27 [23] )
+Generated Location: (2668:61,27 [23] )
 |Convert.ToInt32(@count)|
 
 Source Location: (247:8,44 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml)
 |!@alive|
-Generated Location: (2874:68,44 [7] )
+Generated Location: (2900:68,44 [7] )
 |!@alive|
 
 Source Location: (272:9,12 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml)
 |(int)@obj.age|
-Generated Location: (3225:77,27 [13] )
+Generated Location: (3251:77,27 [13] )
 |(int)@obj.age|
 
 Source Location: (292:9,32 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml)
 |new { @params = 1 }|
-Generated Location: (3436:84,32 [19] )
+Generated Location: (3462:84,32 [19] )
 |new { @params = 1 }|
 
 Source Location: (343:10,26 [124] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml)
 |(@item. Items.Where(i=>i.Contains("one")). Count()>0, @item. Items.FirstOrDefault(i=>i.Contains("one"))?. Replace("one",""))|
-Generated Location: (3838:93,66 [124] )
+Generated Location: (3864:93,66 [124] )
 |(@item. Items.Where(i=>i.Contains("one")). Count()>0, @item. Items.FirstOrDefault(i=>i.Contains("one"))?. Replace("one",""))|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_Runtime.codegen.cs
index b97277b2108..b66bf880cca 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "8fc172b55ced462a1746f1082869701d161cf36fd24dacd8d9fa98cc66d744ad"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_Runtime.ir.txt
index c8898d923fe..83388c3f1b1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedIdentifier_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedIdentifier - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.codegen.cs
index c71d28813bd..9e69f9f5952 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.ir.txt
index 81c25965b2f..7e66b754497 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper2 - __TestNamespace_InputTagHelper2
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.mappings.txt
index 17ed97342eb..c6a1605a4ef 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (14:0,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers.cshtml)
 |*, TestAssembly|
-Generated Location: (1824:33,38 [15] )
+Generated Location: (1850:33,38 [15] )
 |*, TestAssembly|
 
 Source Location: (106:3,29 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers.cshtml)
 |DateTime.Now|
-Generated Location: (2358:50,29 [12] )
+Generated Location: (2384:50,29 [12] )
 |DateTime.Now|
 
 Source Location: (204:5,51 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers.cshtml)
 |DateTime.Now|
-Generated Location: (2794:59,51 [12] )
+Generated Location: (2820:59,51 [12] )
 |DateTime.Now|
 
 Source Location: (227:5,74 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers.cshtml)
 |true|
-Generated Location: (3199:68,74 [4] )
+Generated Location: (3225:68,74 [4] )
 |true|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_Runtime.codegen.cs
index e2a818c275d..f8540d50f2f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "602b63a03b7490d9350a834c628e36b03134479ea417de4aca379f59b8089f35"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_Runtime.ir.txt
index 340e6c5aae1..c8aef1bcb8e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/EscapedTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_EscapedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper2 - __TestNamespace_InputTagHelper2
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.codegen.cs
index 414aec818d3..2c34634b8da 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.ir.txt
index 40a90bb5cdf..fbef1cc35bc 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.mappings.txt
index 3e3ed234a2c..d5137abad3b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (20:2,2 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF.cshtml)
 ||
-Generated Location: (1484:33,6 [0] )
+Generated Location: (1510:33,6 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_Runtime.codegen.cs
index c89b963cd18..3e5132077de 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "32bee45d8028059ac44a7f812a2749196ee1be1683ed25d4e21d8d13f47da75c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_Runtime.ir.txt
index 3ec37e6097b..527966f5c29 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionAtEOF_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [18] ExplicitExpressionAtEOF.cshtml)
                     LazyIntermediateToken - (0:0,0 [18] ExplicitExpressionAtEOF.cshtml) - Html - This is markup\n\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.codegen.cs
index 2ac3883efaa..8dcdd3620af 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.ir.txt
index 374999b63c4..d3c672320d5 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.mappings.txt
index e571b69ca9f..97e36eed7ba 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (14:0,14 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup.cshtml)
 ||
-Generated Location: (1606:35,1 [0] )
+Generated Location: (1632:35,1 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_Runtime.codegen.cs
index 980633f89fd..280ffcd6db8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "d6b6b46422180a2d5485fc829481edf617295af5ea333631211aa0c2c472d178"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_Runtime.ir.txt
index c5be1147976..ccb93547bd8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpressionWithMarkup_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpressionWithMarkup - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [5] ExplicitExpressionWithMarkup.cshtml)
                     LazyIntermediateToken - (0:0,0 [4] ExplicitExpressionWithMarkup.cshtml) - Html - <div
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.codegen.cs
index b90d18d4839..7cc23a3940f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.ir.txt
index ae7b489a819..a90513cbdf7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.mappings.txt
index 4a36f0b924f..d20d160807b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (10:0,10 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression.cshtml)
 |1+1|
-Generated Location: (1473:33,10 [3] )
+Generated Location: (1499:33,10 [3] )
 |1+1|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_Runtime.codegen.cs
index d3b33f67196..3676d6ece1f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "127c2e4532452a01cb38d7d47d12b143d778f204179f089dd1851ea16c19af0a"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_Runtime.ir.txt
index 1eeaa7edc17..3efb69e7414 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExplicitExpression_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [8] ExplicitExpression.cshtml)
                     LazyIntermediateToken - (0:0,0 [8] ExplicitExpression.cshtml) - Html - 1 + 1 = 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.codegen.cs
index fd65c220d47..4e180f5a809 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.ir.txt
index 2872b891b6e..337df7737a6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.mappings.txt
index 844305443a9..6a6ea24f261 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_DesignTime.mappings.txt
@@ -3,7 +3,7 @@
     object foo = null;
     string bar = "Foo";
 |
-Generated Location: (1462:33,2 [51] )
+Generated Location: (1488:33,2 [51] )
 |
     object foo = null;
     string bar = "Foo";
@@ -12,20 +12,20 @@ Generated Location: (1462:33,2 [51] )
 Source Location: (59:5,1 [23] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml)
 |if(foo != null) {
     |
-Generated Location: (1676:42,1 [23] )
+Generated Location: (1702:42,1 [23] )
 |if(foo != null) {
     |
 
 Source Location: (83:6,5 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml)
 |foo|
-Generated Location: (1869:50,6 [3] )
+Generated Location: (1895:50,6 [3] )
 |foo|
 
 Source Location: (86:6,8 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml)
 |
 } else {
     |
-Generated Location: (2045:57,8 [16] )
+Generated Location: (2071:57,8 [16] )
 |
 } else {
     |
@@ -33,26 +33,26 @@ Generated Location: (2045:57,8 [16] )
 Source Location: (121:8,23 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml)
 |
 }|
-Generated Location: (2248:66,23 [3] )
+Generated Location: (2274:66,23 [3] )
 |
 }|
 
 Source Location: (134:12,1 [38] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml)
 |if(!String.IsNullOrEmpty(bar)) {
     |
-Generated Location: (2417:74,1 [38] )
+Generated Location: (2443:74,1 [38] )
 |if(!String.IsNullOrEmpty(bar)) {
     |
 
 Source Location: (174:13,6 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml)
 |bar.Replace("F", "B")|
-Generated Location: (2626:82,6 [21] )
+Generated Location: (2652:82,6 [21] )
 |bar.Replace("F", "B")|
 
 Source Location: (196:13,28 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml)
 |
 }|
-Generated Location: (2841:89,28 [3] )
+Generated Location: (2867:89,28 [3] )
 |
 }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_Runtime.codegen.cs
index 9ec272bb776..5033d43fda0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "c9cc7d097735e4074bc4f71cd46101fc821fdb0592f90d491f09fdecddf3caf3"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_Runtime.ir.txt
index d5677645b4e..52e6fac4718 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ExpressionsInCode_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ExpressionsInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [51] ExpressionsInCode.cshtml)
                     LazyIntermediateToken - (2:0,2 [51] ExpressionsInCode.cshtml) - CSharp - \n    object foo = null;\n    string bar = "Foo";\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.codegen.cs
index 8c747a197f2..dea191752cf 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.ir.txt
index 6c4a32046c5..30b7218368c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.mappings.txt
index 9c3dce835be..e0f664757d1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_DesignTime.mappings.txt
@@ -4,7 +4,7 @@ string foo(string input) {
 	return input + "!";
 }
 |
-Generated Location: (1533:35,12 [55] )
+Generated Location: (1559:35,12 [55] )
 |
 string foo(string input) {
 	return input + "!";
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_Runtime.codegen.cs
index f1d1aa5a210..820f83e5671 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "efea5780300288b4c0a438cb8dbd885088680963b3e2ceab4416264993e99884"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_Runtime.ir.txt
index 67bc1c2d297..b2091f476a1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlockMinimal_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlockMinimal - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [4] FunctionsBlockMinimal.cshtml)
                     LazyIntermediateToken - (0:0,0 [4] FunctionsBlockMinimal.cshtml) - Html - \n\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.codegen.cs
index ee2143678a2..349f53a914b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.ir.txt
index 3c830d841ec..8fa7fe03939 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.mappings.txt
index 42c5eeb452c..5dd526ec510 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_DesignTime.mappings.txt
@@ -1,13 +1,13 @@
 Source Location: (167:11,25 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock.cshtml)
 |RandomInt()|
-Generated Location: (1477:33,25 [11] )
+Generated Location: (1503:33,25 [11] )
 |RandomInt()|
 
 Source Location: (12:0,12 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock.cshtml)
 |
 
 |
-Generated Location: (1711:42,12 [4] )
+Generated Location: (1737:42,12 [4] )
 |
 
 |
@@ -19,7 +19,7 @@ Source Location: (33:4,12 [104] TestFiles/IntegrationTests/CodeGenerationIntegra
         return _rand.Next();
     }
 |
-Generated Location: (1886:50,12 [104] )
+Generated Location: (1912:50,12 [104] )
 |
     Random _rand = new Random();
     private int RandomInt() {
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_Runtime.codegen.cs
index 31228bf1917..d82a603126e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "87718d380117c487f66665bd4c191fcab3bbf6821e64caa809bf2fd1ad6af664"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_Runtime.ir.txt
index ec88a1948dd..4fa36b8f439 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/FunctionsBlock_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_FunctionsBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (19:3,0 [2] FunctionsBlock.cshtml)
                     LazyIntermediateToken - (19:3,0 [2] FunctionsBlock.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.codegen.cs
index e82bc796b51..d6ad1397883 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.ir.txt
index 959e6765dd3..55a0f83aa61 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.mappings.txt
index 6ef7c1f39ba..608aac72830 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_DesignTime.mappings.txt
@@ -1,14 +1,14 @@
 Source Location: (2:0,2 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode.cshtml)
 |
     |
-Generated Location: (1462:33,2 [6] )
+Generated Location: (1488:33,2 [6] )
 |
     |
 
 Source Location: (9:1,5 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode.cshtml)
 |@Da
 |
-Generated Location: (1637:41,5 [5] )
+Generated Location: (1663:41,5 [5] )
 |@Da
 |
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_Runtime.codegen.cs
index 687f861d929..ab0bc0232aa 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "f28b1d44c575d208cd85ccdfcbacce93cf352fed0b4626a5450b19c7aee40d04"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_Runtime.ir.txt
index 263870234ea..929394c228e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HiddenSpansInCode_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HiddenSpansInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [6] HiddenSpansInCode.cshtml)
                     LazyIntermediateToken - (2:0,2 [6] HiddenSpansInCode.cshtml) - CSharp - \n    
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_DesignTime.codegen.cs
index 9b1cfc015e5..16d6ef39aa7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_DesignTime.ir.txt
index 2d897baddc7..e78cd9b7063 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.UrlResolutionTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_UrlResolutionTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_Runtime.codegen.cs
index 81126e4108e..f7abc1d3221 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "27a85171d5a386c4f1b5ff7df75346b702207bfa961bbf3b5418584132a09c45"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("src", new global::Microsoft.AspNetCore.Html.HtmlString("~/images/submit.png"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_Runtime.ir.txt
index 1b51c61a054..e4654c94a1f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Double_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Double - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - src - ~/images/submit.png - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.UrlResolutionTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_UrlResolutionTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_DesignTime.codegen.cs
index e61df7570d9..3e18757d068 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_DesignTime.ir.txt
index 9ed95001eae..8d278471394 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.UrlResolutionTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_UrlResolutionTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_Runtime.codegen.cs
index b88b00e29fe..b5459d7a2f6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "88d08131b744c1b898ea33808f9b0ed6339ccaab3836730b144161c70d193e61"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("src", new global::Microsoft.AspNetCore.Html.HtmlString("~/images/submit.png"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_Runtime.ir.txt
index 2ab5c3cbf12..134680c52ef 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/HtmlCommentWithQuote_Single_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_HtmlCommentWithQuote_Single - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - src - ~/images/submit.png - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.UrlResolutionTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_UrlResolutionTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.codegen.cs
index 4a0caf4adb8..0cfe4b54156 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>, IDisposable
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>, IDisposable
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.ir.txt
index 66b9e8d4bf6..cab993cd2a3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - IDisposable
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - IDisposable
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.mappings.txt
index d35dc5551cb..5bb82ae1446 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_DesignTime.mappings.txt
@@ -1,13 +1,13 @@
 Source Location: (12:0,12 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements.cshtml)
 |IDisposable|
-Generated Location: (1196:26,0 [11] )
+Generated Location: (1222:26,0 [11] )
 |IDisposable|
 
 Source Location: (39:2,12 [38] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements.cshtml)
 |
     void IDisposable.Dispose() { }
 |
-Generated Location: (1774:45,12 [38] )
+Generated Location: (1800:45,12 [38] )
 |
     void IDisposable.Dispose() { }
 |
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_Runtime.codegen.cs
index 78674d755a5..32c9e48e122 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "668986313132d43ea69290e3a9fa026efcdd9b84e34b0fe6ef95f8096bd84385"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>, IDisposable
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>, IDisposable
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_Runtime.ir.txt
index 2ef71d6d5cf..4b58651fc9b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Implements_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - IDisposable
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Implements - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - IDisposable
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (25:1,0 [2] Implements.cshtml)
                     LazyIntermediateToken - (25:1,0 [2] Implements.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.codegen.cs
index 1342f541587..b3ec3672d80 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.ir.txt
index f48c7b4e954..94746ecc0c6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.mappings.txt
index ab19a0ce624..a1f0e38e90c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (19:2,1 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF.cshtml)
 ||
-Generated Location: (1484:33,6 [0] )
+Generated Location: (1510:33,6 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_Runtime.codegen.cs
index 7bb72dc5082..c065446ece7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "c51c63579e91e34ccd7908daa20ee621d57df811c127c4675d2c49479e67358c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_Runtime.ir.txt
index 309d0b5718e..539ac7bb2c4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpressionAtEOF_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpressionAtEOF - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [18] ImplicitExpressionAtEOF.cshtml)
                     LazyIntermediateToken - (0:0,0 [18] ImplicitExpressionAtEOF.cshtml) - Html - This is markup\n\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.codegen.cs
index 51fd4390be3..efab73b7b9f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.ir.txt
index 2e6a3381dfd..39c19dcb1ea 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.mappings.txt
index da632e401d2..eea01762490 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_DesignTime.mappings.txt
@@ -1,19 +1,19 @@
 Source Location: (1:0,1 [36] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression.cshtml)
 |for(int i = 1; i <= 10; i++) {
     |
-Generated Location: (1464:33,1 [36] )
+Generated Location: (1490:33,1 [36] )
 |for(int i = 1; i <= 10; i++) {
     |
 
 Source Location: (55:1,22 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression.cshtml)
 |i|
-Generated Location: (1687:41,22 [1] )
+Generated Location: (1713:41,22 [1] )
 |i|
 
 Source Location: (60:1,27 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression.cshtml)
 |
 }|
-Generated Location: (1881:48,27 [3] )
+Generated Location: (1907:48,27 [3] )
 |
 }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_Runtime.codegen.cs
index 92a056800f6..a5c779d4f19 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a9ffb11684d26004cfb4c9d3c57f6e1b1ecfce9046379ae96dc044b20960a06c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_Runtime.ir.txt
index 1ffcfd3f3ea..6735e6751cc 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ImplicitExpression_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ImplicitExpression - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (1:0,1 [32] ImplicitExpression.cshtml)
                     LazyIntermediateToken - (1:0,1 [32] ImplicitExpression.cshtml) - CSharp - for(int i = 1; i <= 10; i++) {\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.codegen.cs
index 2f78e9c6151..27f3a9b0858 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.ir.txt
index e5c52cc4a0f..5748fd781a6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.mappings.txt
index 3592e35d473..df9147119c3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_DesignTime.mappings.txt
@@ -1,70 +1,70 @@
 Source Location: (100:2,13 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (1251:26,38 [0] )
+Generated Location: (1277:26,38 [0] )
 ||
 
 Source Location: (116:3,14 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (1526:36,38 [0] )
+Generated Location: (1552:36,38 [0] )
 ||
 
 Source Location: (132:4,14 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 |"|
-Generated Location: (1800:46,37 [1] )
+Generated Location: (1826:46,37 [1] )
 |"|
 
 Source Location: (153:6,16 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (2075:56,38 [0] )
+Generated Location: (2101:56,38 [0] )
 ||
 
 Source Location: (172:7,17 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (2350:66,38 [0] )
+Generated Location: (2376:66,38 [0] )
 ||
 
 Source Location: (191:8,17 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 |"|
-Generated Location: (2624:76,37 [1] )
+Generated Location: (2650:76,37 [1] )
 |"|
 
 Source Location: (212:10,16 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (2900:86,38 [0] )
+Generated Location: (2926:86,38 [0] )
 ||
 
 Source Location: (231:11,17 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (3176:96,38 [0] )
+Generated Location: (3202:96,38 [0] )
 ||
 
 Source Location: (250:12,17 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 |"|
-Generated Location: (3451:106,37 [1] )
+Generated Location: (3477:106,37 [1] )
 |"|
 
 Source Location: (276:15,10 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (3689:116,0 [0] )
+Generated Location: (3715:116,0 [0] )
 ||
 
 Source Location: (326:21,9 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (3926:126,0 [0] )
+Generated Location: (3952:126,0 [0] )
 ||
 
 Source Location: (264:14,9 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (4428:143,9 [0] )
+Generated Location: (4454:143,9 [0] )
 ||
 
 Source Location: (315:20,8 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (4604:150,8 [0] )
+Generated Location: (4630:150,8 [0] )
 ||
 
 Source Location: (354:24,12 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml)
 ||
-Generated Location: (4784:157,12 [0] )
+Generated Location: (4810:157,12 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.codegen.cs
index a76c039ab73..c9c21931222 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "eb06c7c88327837013a4b8bbc01e69455dd31e066c651c88da5da9887b37f4d9"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.ir.txt
index a4a712b6eaa..382efa77cf1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteDirectives_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteDirectives - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (85:1,0 [2] IncompleteDirectives.cshtml)
                     LazyIntermediateToken - (85:1,0 [2] IncompleteDirectives.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.codegen.cs
index b1665ab5c50..6d762434b2f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.ir.txt
index cd6441f37bf..b9dfbff67d1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.mappings.txt
index 084a27d11d7..4f74c5c66aa 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1733:32,37 [17] )
+Generated Location: (1759:32,37 [17] )
 |"*, TestAssembly"|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_Runtime.codegen.cs
index e279225f6e1..e6dc0ec271f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a6b7468c33484ceae637f17ae6158b1c7c2616a22178d1fe8cb48f2e85f5295c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("class", new global::Microsoft.AspNetCore.Html.HtmlString(""), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_Runtime.ir.txt
index fd71f41bf09..6697abe38fa 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/IncompleteTagHelper_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_IncompleteTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - class -  - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.codegen.cs
index 037caca0dec..4ecd293dd78 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.cs-diagnostics.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.cs-diagnostics.txt
index b8a831fb568..aa306a32a06 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.cs-diagnostics.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.cs-diagnostics.txt
@@ -10,12 +10,12 @@ Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "biz").WithArguments("biz").Wit
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(3,7): error CS0103: The name 'foo' does not exist in the current context
 // __o = foo();
 Diagnostic(ErrorCode.ERR_NameNotInContext, "foo").WithArguments("foo").WithLocation(3, 7),
-// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(19,86): error CS0246: The type or namespace name 'foo' could not be found (are you missing a using directive or an assembly reference?)
-//     public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
-Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "foo").WithArguments("foo").WithLocation(19, 86),
-// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(19,94): error CS0246: The type or namespace name 'baz<>' could not be found (are you missing a using directive or an assembly reference?)
-//     public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
-Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "baz<biz>").WithArguments("baz<>").WithLocation(19, 94),
-// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(19,98): error CS0246: The type or namespace name 'biz' could not be found (are you missing a using directive or an assembly reference?)
-//     public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
-Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "biz").WithArguments("biz").WithLocation(19, 98)
\ No newline at end of file
+// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(19,95): error CS0246: The type or namespace name 'foo' could not be found (are you missing a using directive or an assembly reference?)
+//     internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
+Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "foo").WithArguments("foo").WithLocation(19, 95),
+// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(19,103): error CS0246: The type or namespace name 'baz<>' could not be found (are you missing a using directive or an assembly reference?)
+//     internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
+Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "baz<biz>").WithArguments("baz<>").WithLocation(19, 103),
+// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(19,107): error CS0246: The type or namespace name 'biz' could not be found (are you missing a using directive or an assembly reference?)
+//     internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
+Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "biz").WithArguments("biz").WithLocation(19, 107)
\ No newline at end of file
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.ir.txt
index 0befe19386a..92d236e6f5e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits - foo.bar<baz<biz>>.boz - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits - foo.bar<baz<biz>>.boz - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.mappings.txt
index 37840d94cda..d40e6fc3abc 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (10:0,10 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml)
 |foo.bar<baz<biz>>.boz|
-Generated Location: (1141:26,0 [21] )
+Generated Location: (1167:26,0 [21] )
 |foo.bar<baz<biz>>.boz|
 
 Source Location: (36:2,1 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml)
 |foo()|
-Generated Location: (1672:43,6 [5] )
+Generated Location: (1698:43,6 [5] )
 |foo()|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.codegen.cs
index 02607f6274f..7894a068a68 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "f2e8261f6a1dc47ca6ea0cb9335f0a2b8b0b18bc9f1fc43b6c3a7764e3ac7f75"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.cs-diagnostics.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.cs-diagnostics.txt
index cfba402fdec..bf21394ac74 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.cs-diagnostics.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.cs-diagnostics.txt
@@ -1,15 +1,15 @@
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(3,2): error CS0103: The name 'foo' does not exist in the current context
 // foo()
 Diagnostic(ErrorCode.ERR_NameNotInContext, "foo").WithArguments("foo").WithLocation(3, 2),
-// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(21,86): error CS0246: The type or namespace name 'foo' could not be found (are you missing a using directive or an assembly reference?)
-//     public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
-Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "foo").WithArguments("foo").WithLocation(21, 86),
-// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(21,94): error CS0246: The type or namespace name 'baz<>' could not be found (are you missing a using directive or an assembly reference?)
-//     public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
-Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "baz<biz>").WithArguments("baz<>").WithLocation(21, 94),
-// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(21,98): error CS0246: The type or namespace name 'biz' could not be found (are you missing a using directive or an assembly reference?)
-//     public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
-Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "biz").WithArguments("biz").WithLocation(21, 98),
+// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(21,95): error CS0246: The type or namespace name 'foo' could not be found (are you missing a using directive or an assembly reference?)
+//     internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
+Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "foo").WithArguments("foo").WithLocation(21, 95),
+// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(21,103): error CS0246: The type or namespace name 'baz<>' could not be found (are you missing a using directive or an assembly reference?)
+//     internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
+Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "baz<biz>").WithArguments("baz<>").WithLocation(21, 103),
+// TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(21,107): error CS0246: The type or namespace name 'biz' could not be found (are you missing a using directive or an assembly reference?)
+//     internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits : foo.bar<baz<biz>>.boz
+Diagnostic(ErrorCode.ERR_SingleTypeNameNotFound, "biz").WithArguments("biz").WithLocation(21, 107),
 // TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits.cshtml(27,13): error CS0103: The name 'WriteLiteral' does not exist in the current context
 //             WriteLiteral("\r\n");
 Diagnostic(ErrorCode.ERR_NameNotInContext, "WriteLiteral").WithArguments("WriteLiteral").WithLocation(27, 13),
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.ir.txt
index bcda0ccbb52..2e6bf46ae2c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Inherits_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits - foo.bar<baz<biz>>.boz - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Inherits - foo.bar<baz<biz>>.boz - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (33:1,0 [2] Inherits.cshtml)
                     LazyIntermediateToken - (33:1,0 [2] Inherits.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.codegen.cs
index 09e8c2776b4..d2eafe6c0dd 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.ir.txt
index 5f61fc6cb42..7fe620ea765 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.mappings.txt
index 2e328813770..c32278526e9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_DesignTime.mappings.txt
@@ -1,25 +1,25 @@
 Source Location: (9:0,9 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml)
 |Link|
-Generated Location: (1211:26,22 [4] )
+Generated Location: (1237:26,22 [4] )
 |Link|
 
 Source Location: (44:1,14 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml)
 |if(link != null) { |
-Generated Location: (1721:43,14 [19] )
+Generated Location: (1747:43,14 [19] )
 |if(link != null) { |
 
 Source Location: (64:1,34 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml)
 |link|
-Generated Location: (1933:50,34 [4] )
+Generated Location: (1959:50,34 [4] )
 |link|
 
 Source Location: (68:1,38 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml)
 | } else { |
-Generated Location: (2135:57,38 [10] )
+Generated Location: (2161:57,38 [10] )
 | } else { |
 
 Source Location: (92:1,62 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml)
 | }|
-Generated Location: (2366:64,62 [2] )
+Generated Location: (2392:64,62 [2] )
 | }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_Runtime.codegen.cs
index e8192805b25..35ab012a071 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "d7855bb65d3e6db02c3a0fb02972366eb41151f780bf5b52f5c72a44a4591587"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_Runtime.ir.txt
index 7d92d9337a1..cfc241aa1ba 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/InlineBlocks_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_InlineBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 MalformedDirective - (0:0,0 [13] InlineBlocks.cshtml) - section
                     DirectiveToken - (9:0,9 [4] InlineBlocks.cshtml) - Link
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.codegen.cs
index fcc56226630..a03a3a7522b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.ir.txt
index 3bc691ae609..a2ae4a6f8b2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.mappings.txt
index cd2fb2f7173..20095dd1784 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_DesignTime.mappings.txt
@@ -2,7 +2,7 @@
 |
     int i = 1;
     var foo = |
-Generated Location: (1447:33,2 [32] )
+Generated Location: (1473:33,2 [32] )
 |
     int i = 1;
     var foo = |
@@ -10,39 +10,39 @@ Generated Location: (1447:33,2 [32] )
 Source Location: (45:2,25 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |;
     |
-Generated Location: (1806:45,25 [7] )
+Generated Location: (1832:45,25 [7] )
 |;
     |
 
 Source Location: (68:4,0 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |    |
-Generated Location: (1972:53,0 [4] )
+Generated Location: (1998:53,0 [4] )
 |    |
 
 Source Location: (91:4,23 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |
 |
-Generated Location: (2158:60,23 [2] )
+Generated Location: (2184:60,23 [2] )
 |
 |
 
 Source Location: (99:7,1 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |while(i <= 10) {
     |
-Generated Location: (2318:67,1 [22] )
+Generated Location: (2344:67,1 [22] )
 |while(i <= 10) {
     |
 
 Source Location: (142:8,25 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |i|
-Generated Location: (2524:75,25 [1] )
+Generated Location: (2550:75,25 [1] )
 |i|
 
 Source Location: (148:8,31 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |
     i += 1;
 }|
-Generated Location: (2716:82,31 [16] )
+Generated Location: (2742:82,31 [16] )
 |
     i += 1;
 }|
@@ -50,14 +50,14 @@ Generated Location: (2716:82,31 [16] )
 Source Location: (169:12,1 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |if(i == 11) {
     |
-Generated Location: (2893:91,1 [19] )
+Generated Location: (2919:91,1 [19] )
 |if(i == 11) {
     |
 
 Source Location: (213:13,29 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |
 }|
-Generated Location: (3101:99,29 [3] )
+Generated Location: (3127:99,29 [3] )
 |
 }|
 
@@ -65,7 +65,7 @@ Source Location: (221:16,1 [35] TestFiles/IntegrationTests/CodeGenerationIntegra
 |switch(i) {
     case 11:
         |
-Generated Location: (3265:107,1 [35] )
+Generated Location: (3291:107,1 [35] )
 |switch(i) {
     case 11:
         |
@@ -75,7 +75,7 @@ Source Location: (292:18,44 [40] TestFiles/IntegrationTests/CodeGenerationIntegr
         break;
     default:
         |
-Generated Location: (3504:116,44 [40] )
+Generated Location: (3530:116,44 [40] )
 |
         break;
     default:
@@ -85,7 +85,7 @@ Source Location: (361:21,37 [19] TestFiles/IntegrationTests/CodeGenerationIntegr
 |
         break;
 }|
-Generated Location: (3741:126,37 [19] )
+Generated Location: (3767:126,37 [19] )
 |
         break;
 }|
@@ -93,26 +93,26 @@ Generated Location: (3741:126,37 [19] )
 Source Location: (385:25,1 [39] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |for(int j = 1; j <= 10; j += 2) {
     |
-Generated Location: (3921:135,1 [39] )
+Generated Location: (3947:135,1 [39] )
 |for(int j = 1; j <= 10; j += 2) {
     |
 
 Source Location: (451:26,31 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |j|
-Generated Location: (4151:143,31 [1] )
+Generated Location: (4177:143,31 [1] )
 |j|
 
 Source Location: (457:26,37 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |
 }|
-Generated Location: (4350:150,37 [3] )
+Generated Location: (4376:150,37 [3] )
 |
 }|
 
 Source Location: (465:29,1 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |try {
     |
-Generated Location: (4514:158,1 [11] )
+Generated Location: (4540:158,1 [11] )
 |try {
     |
 
@@ -120,34 +120,34 @@ Source Location: (511:30,39 [31] TestFiles/IntegrationTests/CodeGenerationIntegr
 |
 } catch(Exception ex) {
     |
-Generated Location: (4724:166,39 [31] )
+Generated Location: (4750:166,39 [31] )
 |
 } catch(Exception ex) {
     |
 
 Source Location: (573:32,35 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |ex.Message|
-Generated Location: (4950:175,35 [10] )
+Generated Location: (4976:175,35 [10] )
 |ex.Message|
 
 Source Location: (588:32,50 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |
 }|
-Generated Location: (5171:182,50 [3] )
+Generated Location: (5197:182,50 [3] )
 |
 }|
 
 Source Location: (596:35,1 [26] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |lock(new object()) {
     |
-Generated Location: (5335:190,1 [26] )
+Generated Location: (5361:190,1 [26] )
 |lock(new object()) {
     |
 
 Source Location: (669:36,51 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml)
 |
 }|
-Generated Location: (5572:198,51 [3] )
+Generated Location: (5598:198,51 [3] )
 |
 }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_Runtime.codegen.cs
index 40e2e0643f1..ab9a0c410f9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "995eb60d7343e6b2916ae503c3fc313ad9fc919ca39dcd50b386d27d2b53f80e"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_Runtime.ir.txt
index 0a87315d8ce..0b8cbc6282e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Instrumented_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Instrumented - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [32] Instrumented.cshtml)
                     LazyIntermediateToken - (2:0,2 [32] Instrumented.cshtml) - CSharp - \n    int i = 1;\n    var foo = 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.codegen.cs
index c179a22082f..75a4260c698 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.ir.txt
index c7c6de0377f..1913a74d92a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.mappings.txt
index f0a2f64bc89..eaf9d729129 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_DesignTime.mappings.txt
@@ -2,21 +2,21 @@
 |
     for(int i = 1; i <= 10; i++) {
         |
-Generated Location: (1462:33,2 [46] )
+Generated Location: (1488:33,2 [46] )
 |
     for(int i = 1; i <= 10; i++) {
         |
 
 Source Location: (69:2,29 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock.cshtml)
 |i.ToString()|
-Generated Location: (1701:42,29 [12] )
+Generated Location: (1727:42,29 [12] )
 |i.ToString()|
 
 Source Location: (86:2,46 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock.cshtml)
 |
     }
 |
-Generated Location: (1924:49,46 [9] )
+Generated Location: (1950:49,46 [9] )
 |
     }
 |
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_Runtime.codegen.cs
index 88b8940ba0b..d3c5f67937b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "8d4533fb0fc90f8228aa0b0c9ec2d1cb53d3ef9b2018884e3e906a63b2e7ec39"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_Runtime.ir.txt
index 05d608baca2..4184ab65086 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MarkupInCodeBlock_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MarkupInCodeBlock - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [38] MarkupInCodeBlock.cshtml)
                     LazyIntermediateToken - (2:0,2 [38] MarkupInCodeBlock.cshtml) - CSharp - \n    for(int i = 1; i <= 10; i++) {\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.codegen.cs
index 9e4ce6fb3f3..2dde3aac494 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.ir.txt
index 9d3e37d7020..e9de58a8aba 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::DivTagHelper - __DivTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.mappings.txt
index 2aa9e3b440a..9077efe7449 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_DesignTime.mappings.txt
@@ -1,6 +1,6 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1748:32,37 [17] )
+Generated Location: (1774:32,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (35:1,2 [154] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
@@ -13,7 +13,7 @@ Source Location: (35:1,2 [154] TestFiles/IntegrationTests/CodeGenerationIntegrat
     void PrintName(Person person)
     {
         |
-Generated Location: (2271:49,2 [154] )
+Generated Location: (2297:49,2 [154] )
 |
     var people = new Person[]
     {
@@ -26,26 +26,26 @@ Generated Location: (2271:49,2 [154] )
 
 Source Location: (195:9,14 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
 |person.Name|
-Generated Location: (2619:64,14 [11] )
+Generated Location: (2645:64,14 [11] )
 |person.Name|
 
 Source Location: (212:9,31 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
 |
     }
 |
-Generated Location: (2989:73,31 [9] )
+Generated Location: (3015:73,31 [9] )
 |
     }
 |
 
 Source Location: (228:13,2 [23] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
 | PrintName(people[0]); |
-Generated Location: (3178:81,2 [23] )
+Generated Location: (3204:81,2 [23] )
 | PrintName(people[0]); |
 
 Source Location: (256:14,2 [36] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
 | await AnnounceBirthday(people[0]); |
-Generated Location: (3383:88,2 [36] )
+Generated Location: (3409:88,2 [36] )
 | await AnnounceBirthday(people[0]); |
 
 Source Location: (309:16,12 [106] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
@@ -54,7 +54,7 @@ Source Location: (309:16,12 [106] TestFiles/IntegrationTests/CodeGenerationInteg
     {
         var formatted = $"Mr. {person.Name}";
         |
-Generated Location: (3660:97,12 [106] )
+Generated Location: (3686:97,12 [106] )
 |
     Task AnnounceBirthday(Person person)
     {
@@ -63,14 +63,14 @@ Generated Location: (3660:97,12 [106] )
 
 Source Location: (455:21,33 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
 |formatted|
-Generated Location: (3979:108,33 [9] )
+Generated Location: (4005:108,33 [9] )
 |formatted|
 
 Source Location: (487:22,14 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
 |
 
         |
-Generated Location: (4322:117,14 [12] )
+Generated Location: (4348:117,14 [12] )
 |
 
         |
@@ -79,20 +79,20 @@ Source Location: (514:25,9 [66] TestFiles/IntegrationTests/CodeGenerationIntegra
 |for (var i = 0; i < person.Age / 10; i++)
         {
             |
-Generated Location: (4523:126,9 [66] )
+Generated Location: (4549:126,9 [66] )
 |for (var i = 0; i < person.Age / 10; i++)
         {
             |
 
 Source Location: (586:27,18 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
 |i|
-Generated Location: (4787:135,18 [1] )
+Generated Location: (4813:135,18 [1] )
 |i|
 
 Source Location: (609:27,41 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml)
 |
         }|
-Generated Location: (5010:142,41 [11] )
+Generated Location: (5036:142,41 [11] )
 |
         }|
 
@@ -105,7 +105,7 @@ Source Location: (635:29,13 [106] TestFiles/IntegrationTests/CodeGenerationInteg
         }
 
         |
-Generated Location: (5214:150,13 [106] )
+Generated Location: (5240:150,13 [106] )
 |
 
         if (person.Age < 20)
@@ -127,7 +127,7 @@ Source Location: (764:36,31 [161] TestFiles/IntegrationTests/CodeGenerationInteg
         public int Age { get; set; }
     }
 |
-Generated Location: (5531:164,31 [161] )
+Generated Location: (5557:164,31 [161] )
 |
         return Task.CompletedTask;
     }
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_Runtime.codegen.cs
index 5731be96cfe..1d5994e1799 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "1d96ed32230877fcfe7acc2e22d4b1c519eb0ccd0599053409543ce8c5f65fa7"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_Runtime.ir.txt
index 675776b967d..bf538d697e7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocksWithTagHelper_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocksWithTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::DivTagHelper - __DivTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.codegen.cs
index cd0e88519d9..674c1816c46 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.ir.txt
index 4848082fc28..d10664be4af 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.mappings.txt
index 113696b3432..aab1dffa975 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_DesignTime.mappings.txt
@@ -8,7 +8,7 @@
     void PrintName(Person person)
     {
         |
-Generated Location: (1468:33,2 [153] )
+Generated Location: (1494:33,2 [153] )
 |
     var people = new Person[]
     {
@@ -21,26 +21,26 @@ Generated Location: (1468:33,2 [153] )
 
 Source Location: (163:9,14 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml)
 |person.Name|
-Generated Location: (1802:48,14 [11] )
+Generated Location: (1828:48,14 [11] )
 |person.Name|
 
 Source Location: (180:9,31 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml)
 |
     }
 |
-Generated Location: (2012:55,31 [9] )
+Generated Location: (2038:55,31 [9] )
 |
     }
 |
 
 Source Location: (196:13,2 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml)
 | PrintName(people[0]) |
-Generated Location: (2188:63,2 [22] )
+Generated Location: (2214:63,2 [22] )
 | PrintName(people[0]) |
 
 Source Location: (223:14,2 [30] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml)
 | AnnounceBirthday(people[0]); |
-Generated Location: (2379:70,2 [30] )
+Generated Location: (2405:70,2 [30] )
 | AnnounceBirthday(people[0]); |
 
 Source Location: (270:16,12 [106] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml)
@@ -49,7 +49,7 @@ Source Location: (270:16,12 [106] TestFiles/IntegrationTests/CodeGenerationInteg
     {
         var formatted = $"Mr. {person.Name}";
         |
-Generated Location: (2637:79,12 [106] )
+Generated Location: (2663:79,12 [106] )
 |
     void AnnounceBirthday(Person person)
     {
@@ -58,14 +58,14 @@ Generated Location: (2637:79,12 [106] )
 
 Source Location: (416:21,33 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml)
 |formatted|
-Generated Location: (2943:90,33 [9] )
+Generated Location: (2969:90,33 [9] )
 |formatted|
 
 Source Location: (448:22,14 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml)
 |
 
         |
-Generated Location: (3134:97,14 [12] )
+Generated Location: (3160:97,14 [12] )
 |
 
         |
@@ -74,20 +74,20 @@ Source Location: (475:25,9 [66] TestFiles/IntegrationTests/CodeGenerationIntegra
 |for (var i = 0; i < person.Age / 10; i++)
         {
             |
-Generated Location: (3322:106,9 [66] )
+Generated Location: (3348:106,9 [66] )
 |for (var i = 0; i < person.Age / 10; i++)
         {
             |
 
 Source Location: (547:27,18 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml)
 |i|
-Generated Location: (3573:115,18 [1] )
+Generated Location: (3599:115,18 [1] )
 |i|
 
 Source Location: (570:27,41 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml)
 |
         }|
-Generated Location: (3783:122,41 [11] )
+Generated Location: (3809:122,41 [11] )
 |
         }|
 
@@ -100,7 +100,7 @@ Source Location: (596:29,13 [87] TestFiles/IntegrationTests/CodeGenerationIntegr
         }
 
         |
-Generated Location: (3974:130,13 [87] )
+Generated Location: (4000:130,13 [87] )
 |
 
         if (person.Age < 20)
@@ -120,7 +120,7 @@ Source Location: (706:36,31 [123] TestFiles/IntegrationTests/CodeGenerationInteg
         public int Age { get; set; }
     }
 |
-Generated Location: (4259:144,31 [123] )
+Generated Location: (4285:144,31 [123] )
 |
     }
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_Runtime.codegen.cs
index 77cd0a8c861..c3477be6c52 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "c38f4efc9c710292c9fc20d2f5c4cc6e8a91f4fa3ee60ec96c16617f506312b8"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_Runtime.ir.txt
index 02571af85bf..0c2f37c479e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Markup_InCodeBlocks_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Markup_InCodeBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [2] Markup_InCodeBlocks.cshtml)
                     LazyIntermediateToken - (0:0,0 [2] Markup_InCodeBlocks.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.codegen.cs
index 873e8ac6fe6..aab5e594d80 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.ir.txt
index 0d7a5cd634a..a3cdb435212 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.CatchAllTagHelper - __TestNamespace_CatchAllTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.mappings.txt
index 5a601c794e1..ae8ed32dc80 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1887:34,37 [17] )
+Generated Location: (1913:34,37 [17] )
 |"*, TestAssembly"|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_Runtime.codegen.cs
index b50b06f40ef..ba5a565e288 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "87fe59d78f3e03370f30b0eb9f80c503873502b116dbdb3beff6cd9fc190f718"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("class", new global::Microsoft.AspNetCore.Html.HtmlString("btn"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_Runtime.ir.txt
index 625051d43ca..f312c1235f2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/MinimizedTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_MinimizedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - class - btn - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_1 - input-bound-required-string - hello - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_2 - catchall-bound-string - world - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.codegen.cs
index e15283b1037..cc83672596c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.ir.txt
index 7c34b7cedbb..259ae720db2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.mappings.txt
index 62f2a807b71..0aee8a2131f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_DesignTime.mappings.txt
@@ -1,7 +1,7 @@
 Source Location: (2:0,2 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp.cshtml)
 |
     |
-Generated Location: (1447:33,2 [6] )
+Generated Location: (1473:33,2 [6] )
 |
     |
 
@@ -9,27 +9,27 @@ Source Location: (9:1,5 [53] TestFiles/IntegrationTests/CodeGenerationIntegratio
 |foreach (var result in (dynamic)Url)
     {
         |
-Generated Location: (1617:41,5 [53] )
+Generated Location: (1643:41,5 [53] )
 |foreach (var result in (dynamic)Url)
     {
         |
 
 Source Location: (82:4,13 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp.cshtml)
 |result.SomeValue|
-Generated Location: (1842:50,13 [16] )
+Generated Location: (1868:50,13 [16] )
 |result.SomeValue|
 
 Source Location: (115:5,14 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp.cshtml)
 |
     }|
-Generated Location: (2032:57,14 [7] )
+Generated Location: (2058:57,14 [7] )
 |
     }|
 
 Source Location: (122:6,5 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp.cshtml)
 |
 |
-Generated Location: (2203:65,5 [2] )
+Generated Location: (2229:65,5 [2] )
 |
 |
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_Runtime.codegen.cs
index e15cf32a54d..4f7e209358b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "c1273eb7fee44c32ab00da03db6ac9a1bf83c1c3b09f32fb242db42978fc4d17"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_Runtime.ir.txt
index 9bc4e74122e..96ff78d1d44 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCSharp_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCSharp - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [6] NestedCSharp.cshtml)
                     LazyIntermediateToken - (2:0,2 [6] NestedCSharp.cshtml) - CSharp - \n    
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.codegen.cs
index d8e34503130..5471dc97123 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.ir.txt
index 479d622b168..1f5dcd77898 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.mappings.txt
index b39b05aa8b1..aa75a4345e9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_DesignTime.mappings.txt
@@ -1,21 +1,21 @@
 Source Location: (1:0,1 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks.cshtml)
 |if(foo) {
     |
-Generated Location: (1458:33,1 [15] )
+Generated Location: (1484:33,1 [15] )
 |if(foo) {
     |
 
 Source Location: (17:1,5 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks.cshtml)
 |if(bar) {
     }|
-Generated Location: (1641:41,5 [16] )
+Generated Location: (1667:41,5 [16] )
 |if(bar) {
     }|
 
 Source Location: (33:2,5 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks.cshtml)
 |
 }|
-Generated Location: (1825:49,5 [3] )
+Generated Location: (1851:49,5 [3] )
 |
 }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_Runtime.codegen.cs
index c842d7e180b..55a466d78b1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "13a85602fed2597baf956e658c5cf96a52e1734ae6cd4674854366bf90b84fb7"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_Runtime.ir.txt
index 03dfaeb62a8..391ddbd747b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedCodeBlocks_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedCodeBlocks - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (1:0,1 [15] NestedCodeBlocks.cshtml)
                     LazyIntermediateToken - (1:0,1 [15] NestedCodeBlocks.cshtml) - CSharp - if(foo) {\n    
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.codegen.cs
index 1186f4f7467..13d75ef1727 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.ir.txt
index ed28aa6924a..36f8e5d6a76 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.mappings.txt
index eb235a44560..60c32e9c2be 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_DesignTime.mappings.txt
@@ -1,29 +1,29 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1925:34,37 [17] )
+Generated Location: (1951:34,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (195:5,13 [46] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml)
 |for(var i = 0; i < 5; i++) {
                 |
-Generated Location: (2452:51,13 [46] )
+Generated Location: (2478:51,13 [46] )
 |for(var i = 0; i < 5; i++) {
                 |
 
 Source Location: (339:7,50 [23] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml)
 |ViewBag.DefaultInterval|
-Generated Location: (2928:61,50 [23] )
+Generated Location: (2954:61,50 [23] )
 |ViewBag.DefaultInterval|
 
 Source Location: (389:7,100 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml)
 |true|
-Generated Location: (3372:70,100 [4] )
+Generated Location: (3398:70,100 [4] )
 |true|
 
 Source Location: (422:8,25 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml)
 |
             }|
-Generated Location: (3650:78,25 [15] )
+Generated Location: (3676:78,25 [15] )
 |
             }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_Runtime.codegen.cs
index 31d02abb628..76f87cd8769 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "b9d3f6bab7b7ca5370c7dfdbb23e59170c95a39498a14d92a3821296aaf9dba2"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", "text", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_Runtime.ir.txt
index 9b3b3b9980d..45b4d2c478f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedScriptTagTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedScriptTagTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - type - text - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - class - Hello World - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - data-delay - 1000 - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.codegen.cs
index 075b9db1a57..10e49125914 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.ir.txt
index ebe381ddd7f..7ded8231849 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::SpanTagHelper - __SpanTagHelper
             FieldDeclaration -  - private - global::DivTagHelper - __DivTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.mappings.txt
index eb3034aa72d..d9081e33c78 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (14:0,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers.cshtml)
 |*, TestAssembly|
-Generated Location: (1815:34,38 [15] )
+Generated Location: (1841:34,38 [15] )
 |*, TestAssembly|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_Runtime.codegen.cs
index 365a283c546..95e694a4651 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "b70a83d84fae87fa6d03261b1a7b2f7cadddf84ab4b9ca15836fe03a1a38b59c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("value", "Hello", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_Runtime.ir.txt
index da62924f023..5b54da81c19 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NestedTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NestedTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - value - Hello - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - type - text - HtmlAttributeValueStyle.SingleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - unbound - foo - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.codegen.cs
index 781297722d9..127724064ae 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.ir.txt
index 5b81ae13b99..8cfe2c38506 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.mappings.txt
index a045d59b3cc..c8a52a88748 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_DesignTime.mappings.txt
@@ -2,7 +2,7 @@
 |
     int i = 1;
 |
-Generated Location: (1450:33,2 [18] )
+Generated Location: (1476:33,2 [18] )
 |
     int i = 1;
 |
@@ -10,20 +10,20 @@ Generated Location: (1450:33,2 [18] )
 Source Location: (26:4,1 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |while(i <= 10) {
     |
-Generated Location: (1627:41,1 [22] )
+Generated Location: (1653:41,1 [22] )
 |while(i <= 10) {
     |
 
 Source Location: (69:5,25 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |i|
-Generated Location: (1834:49,25 [1] )
+Generated Location: (1860:49,25 [1] )
 |i|
 
 Source Location: (75:5,31 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |
     i += 1;
 }|
-Generated Location: (2027:56,31 [16] )
+Generated Location: (2053:56,31 [16] )
 |
     i += 1;
 }|
@@ -31,14 +31,14 @@ Generated Location: (2027:56,31 [16] )
 Source Location: (96:9,1 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |if(i == 11) {
     |
-Generated Location: (2205:65,1 [19] )
+Generated Location: (2231:65,1 [19] )
 |if(i == 11) {
     |
 
 Source Location: (140:10,29 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |
 }|
-Generated Location: (2414:73,29 [3] )
+Generated Location: (2440:73,29 [3] )
 |
 }|
 
@@ -46,7 +46,7 @@ Source Location: (148:13,1 [35] TestFiles/IntegrationTests/CodeGenerationIntegra
 |switch(i) {
     case 11:
         |
-Generated Location: (2579:81,1 [35] )
+Generated Location: (2605:81,1 [35] )
 |switch(i) {
     case 11:
         |
@@ -56,7 +56,7 @@ Source Location: (219:15,44 [40] TestFiles/IntegrationTests/CodeGenerationIntegr
         break;
     default:
         |
-Generated Location: (2819:90,44 [40] )
+Generated Location: (2845:90,44 [40] )
 |
         break;
     default:
@@ -66,7 +66,7 @@ Source Location: (288:18,37 [19] TestFiles/IntegrationTests/CodeGenerationIntegr
 |
         break;
 }|
-Generated Location: (3057:100,37 [19] )
+Generated Location: (3083:100,37 [19] )
 |
         break;
 }|
@@ -74,26 +74,26 @@ Generated Location: (3057:100,37 [19] )
 Source Location: (312:22,1 [39] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |for(int j = 1; j <= 10; j += 2) {
     |
-Generated Location: (3238:109,1 [39] )
+Generated Location: (3264:109,1 [39] )
 |for(int j = 1; j <= 10; j += 2) {
     |
 
 Source Location: (378:23,31 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |j|
-Generated Location: (3469:117,31 [1] )
+Generated Location: (3495:117,31 [1] )
 |j|
 
 Source Location: (384:23,37 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |
 }|
-Generated Location: (3669:124,37 [3] )
+Generated Location: (3695:124,37 [3] )
 |
 }|
 
 Source Location: (392:26,1 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |try {
     |
-Generated Location: (3834:132,1 [11] )
+Generated Location: (3860:132,1 [11] )
 |try {
     |
 
@@ -101,14 +101,14 @@ Source Location: (438:27,39 [31] TestFiles/IntegrationTests/CodeGenerationIntegr
 |
 } catch(Exception ex) {
     |
-Generated Location: (4045:140,39 [31] )
+Generated Location: (4071:140,39 [31] )
 |
 } catch(Exception ex) {
     |
 
 Source Location: (500:29,35 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |ex.Message|
-Generated Location: (4272:149,35 [10] )
+Generated Location: (4298:149,35 [10] )
 |ex.Message|
 
 Source Location: (515:29,50 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
@@ -116,7 +116,7 @@ Source Location: (515:29,50 [7] TestFiles/IntegrationTests/CodeGenerationIntegra
 }
 
 |
-Generated Location: (4494:156,50 [7] )
+Generated Location: (4520:156,50 [7] )
 |
 }
 
@@ -124,25 +124,25 @@ Generated Location: (4494:156,50 [7] )
 
 Source Location: (556:32,34 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 ||
-Generated Location: (4694:165,34 [0] )
+Generated Location: (4720:165,34 [0] )
 ||
 
 Source Location: (571:33,13 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |i|
-Generated Location: (4868:172,13 [1] )
+Generated Location: (4894:172,13 [1] )
 |i|
 
 Source Location: (581:35,1 [26] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |lock(new object()) {
     |
-Generated Location: (5032:179,1 [26] )
+Generated Location: (5058:179,1 [26] )
 |lock(new object()) {
     |
 
 Source Location: (654:36,51 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml)
 |
 }|
-Generated Location: (5270:187,51 [3] )
+Generated Location: (5296:187,51 [3] )
 |
 }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_Runtime.codegen.cs
index 8f8acad959a..ffce9a306a8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "5d359099ffaf3096190a7267378a546e5814b6a10f2691fdce13ec7577332aec"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_Runtime.ir.txt
index 94e1d3900e9..30142d2dd68 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NoLinePragmas_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NoLinePragmas - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [18] NoLinePragmas.cshtml)
                     LazyIntermediateToken - (2:0,2 [18] NoLinePragmas.cshtml) - CSharp - \n    int i = 1;\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.codegen.cs
index a0696ffeda0..bc71f0295d1 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.ir.txt
index 93da393ff63..b9b1062d69d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.mappings.txt
index 0330ff17c9d..38bb7262277 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_DesignTime.mappings.txt
@@ -1,75 +1,75 @@
 Source Location: (2:0,2 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |
     |
-Generated Location: (1489:33,2 [6] )
+Generated Location: (1515:33,2 [6] )
 |
     |
 
 Source Location: (9:1,5 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |ViewBag?.Data|
-Generated Location: (1674:41,6 [13] )
+Generated Location: (1700:41,6 [13] )
 |ViewBag?.Data|
 
 Source Location: (22:1,18 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |
     |
-Generated Location: (1879:48,18 [6] )
+Generated Location: (1905:48,18 [6] )
 |
     |
 
 Source Location: (29:2,5 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |ViewBag.IntIndexer?[0]|
-Generated Location: (2064:56,6 [22] )
+Generated Location: (2090:56,6 [22] )
 |ViewBag.IntIndexer?[0]|
 
 Source Location: (51:2,27 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |
     |
-Generated Location: (2287:63,27 [6] )
+Generated Location: (2313:63,27 [6] )
 |
     |
 
 Source Location: (58:3,5 [26] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |ViewBag.StrIndexer?["key"]|
-Generated Location: (2472:71,6 [26] )
+Generated Location: (2498:71,6 [26] )
 |ViewBag.StrIndexer?["key"]|
 
 Source Location: (84:3,31 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |
     |
-Generated Location: (2703:78,31 [6] )
+Generated Location: (2729:78,31 [6] )
 |
     |
 
 Source Location: (91:4,5 [41] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |ViewBag?.Method(Value?[23]?.More)?["key"]|
-Generated Location: (2888:86,6 [41] )
+Generated Location: (2914:86,6 [41] )
 |ViewBag?.Method(Value?[23]?.More)?["key"]|
 
 Source Location: (132:4,46 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |
 |
-Generated Location: (3149:93,46 [2] )
+Generated Location: (3175:93,46 [2] )
 |
 |
 
 Source Location: (140:7,1 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |ViewBag?.Data|
-Generated Location: (3328:100,6 [13] )
+Generated Location: (3354:100,6 [13] )
 |ViewBag?.Data|
 
 Source Location: (156:8,1 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |ViewBag.IntIndexer?[0]|
-Generated Location: (3521:107,6 [22] )
+Generated Location: (3547:107,6 [22] )
 |ViewBag.IntIndexer?[0]|
 
 Source Location: (181:9,1 [26] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |ViewBag.StrIndexer?["key"]|
-Generated Location: (3724:114,6 [26] )
+Generated Location: (3750:114,6 [26] )
 |ViewBag.StrIndexer?["key"]|
 
 Source Location: (210:10,1 [41] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml)
 |ViewBag?.Method(Value?[23]?.More)?["key"]|
-Generated Location: (3931:121,6 [41] )
+Generated Location: (3957:121,6 [41] )
 |ViewBag?.Method(Value?[23]?.More)?["key"]|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_Runtime.codegen.cs
index 85eac013619..0ec12b4d474 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "bb8d8c34e68ddf6c5aaf34e0f1c5f319f48c57e4ba3661228c4eeeb8bb9b79ce"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_Runtime.ir.txt
index 45a0ebb4e8f..1c153641b76 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/NullConditionalExpressions_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_NullConditionalExpressions - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [6] NullConditionalExpressions.cshtml)
                     LazyIntermediateToken - (2:0,2 [6] NullConditionalExpressions.cshtml) - CSharp - \n    
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.codegen.cs
index cdd496becc9..de895f73c52 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.ir.txt
index 260117e7542..fdba2522af3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.BodyTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_BodyTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.mappings.txt
index c7fd22841d9..0408e3d1b76 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_DesignTime.mappings.txt
@@ -1,19 +1,19 @@
 Source Location: (17:2,1 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf.cshtml)
 |if (true) { 
 |
-Generated Location: (1982:39,1 [14] )
+Generated Location: (2008:39,1 [14] )
 |if (true) { 
 |
 
 Source Location: (38:3,7 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf.cshtml)
 |
 |
-Generated Location: (2156:46,7 [2] )
+Generated Location: (2182:46,7 [2] )
 |
 |
 
 Source Location: (47:4,7 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf.cshtml)
 ||
-Generated Location: (2318:53,7 [0] )
+Generated Location: (2344:53,7 [0] )
 ||
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_Runtime.codegen.cs
index dab52a101c2..d3340b2d5a2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "88878cf1ea054aeb74300eb51cb951ede03552e4df20742a94bc2d437e248274"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_Runtime.ir.txt
index 3004f057472..473b9648415 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/OpenedIf_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_OpenedIf - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::Microsoft.AspNetCore.Mvc.Razor.TagHelpers.BodyTagHelper - __Microsoft_AspNetCore_Mvc_Razor_TagHelpers_BodyTagHelper
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.codegen.cs
index e028f4d2489..347d347b308 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.ir.txt
index 1d2c6ef0d5d..aa1f5fd4023 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.mappings.txt
index 91160670a46..05d52d55ee3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_DesignTime.mappings.txt
@@ -4,7 +4,7 @@
 int i =10;
 int j =20;
 }|
-Generated Location: (1444:33,2 [31] )
+Generated Location: (1470:33,2 [31] )
 |
 /*
 int i =10;
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_Runtime.codegen.cs
index bcd60d5d038..22df09ada55 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "2ea704d333b7a4d377b389409cc282c6500f60cbc098fd01acffeac4b61d150b"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_Runtime.ir.txt
index 9edd6cad57e..9c0f61420b5 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/ParserError_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_ParserError - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [31] ParserError.cshtml)
                     LazyIntermediateToken - (2:0,2 [31] ParserError.cshtml) - CSharp - \n/*\nint i =10;\nint j =20;\n}
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.codegen.cs
index 05988623c7f..20f1105bbcf 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.ir.txt
index f077a61cf89..5cd2766446a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper1 - __TestNamespace_InputTagHelper1
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper2 - __TestNamespace_InputTagHelper2
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.mappings.txt
index c89df5a1c68..23d767d3da4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_DesignTime.mappings.txt
@@ -1,6 +1,6 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1855:33,37 [17] )
+Generated Location: (1881:33,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (37:2,2 [242] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
@@ -15,7 +15,7 @@ Source Location: (37:2,2 [242] TestFiles/IntegrationTests/CodeGenerationIntegrat
         { "name", "value" },
     };
 |
-Generated Location: (2373:50,2 [242] )
+Generated Location: (2399:50,2 [242] )
 |
     var literate = "or illiterate";
     var intDictionary = new Dictionary<string, int>
@@ -30,51 +30,51 @@ Generated Location: (2373:50,2 [242] )
 
 Source Location: (370:15,43 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |intDictionary|
-Generated Location: (3054:68,56 [13] )
+Generated Location: (3080:68,56 [13] )
 |intDictionary|
 
 Source Location: (404:15,77 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |stringDictionary|
-Generated Location: (3444:76,77 [16] )
+Generated Location: (3470:76,77 [16] )
 |stringDictionary|
 
 Source Location: (468:16,43 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |intDictionary|
-Generated Location: (4108:87,56 [13] )
+Generated Location: (4134:87,56 [13] )
 |intDictionary|
 
 Source Location: (502:16,77 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |37|
-Generated Location: (4498:95,77 [2] )
+Generated Location: (4524:95,77 [2] )
 |37|
 
 Source Location: (526:16,101 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |42|
-Generated Location: (4921:103,101 [2] )
+Generated Location: (4947:103,101 [2] )
 |42|
 
 Source Location: (590:18,31 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |42|
-Generated Location: (5556:114,46 [2] )
+Generated Location: (5582:114,46 [2] )
 |42|
 
 Source Location: (611:18,52 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |37|
-Generated Location: (5923:122,64 [2] )
+Generated Location: (5949:122,64 [2] )
 |37|
 
 Source Location: (634:18,75 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |98|
-Generated Location: (6316:130,75 [2] )
+Generated Location: (6342:130,75 [2] )
 |98|
 
 Source Location: (783:20,42 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |literate|
-Generated Location: (7136:142,42 [8] )
+Generated Location: (7162:142,42 [8] )
 |literate|
 
 Source Location: (826:21,29 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml)
 |37|
-Generated Location: (7914:154,65 [2] )
+Generated Location: (7940:154,65 [2] )
 |37|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_Runtime.codegen.cs
index 7b948c4d155..d3168b292b9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "28f23e39ed667ea15fc4af5b51ee4ad399519e7dd4dbddb840b8b70c29baf0e5"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", new global::Microsoft.AspNetCore.Html.HtmlString("checkbox"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_Runtime.ir.txt
index 8423dd65388..fe7c85c4681 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/PrefixedAttributeTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_PrefixedAttributeTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - type - checkbox - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - type - password - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - type - radio - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.codegen.cs
index 7e4c9770598..7b6c78c5720 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.ir.txt
index e1680c41e3d..b51a5ea39fa 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.mappings.txt
index 4f30421ebe1..fe2be405d9c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_DesignTime.mappings.txt
@@ -1,14 +1,14 @@
 Source Location: (81:3,2 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml)
 |
     |
-Generated Location: (1450:33,2 [6] )
+Generated Location: (1476:33,2 [6] )
 |
     |
 
 Source Location: (122:4,39 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml)
 |
     Exception foo = |
-Generated Location: (1655:41,39 [22] )
+Generated Location: (1681:41,39 [22] )
 |
     Exception foo = |
 
@@ -18,7 +18,7 @@ Source Location: (173:5,49 [58] TestFiles/IntegrationTests/CodeGenerationIntegra
         throw foo;
     }
 |
-Generated Location: (1886:49,49 [58] )
+Generated Location: (1912:49,49 [58] )
 | null;
     if(foo != null) {
         throw foo;
@@ -27,21 +27,21 @@ Generated Location: (1886:49,49 [58] )
 
 Source Location: (238:11,2 [24] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml)
 | var bar = "@* bar *@"; |
-Generated Location: (2105:59,2 [24] )
+Generated Location: (2131:59,2 [24] )
 | var bar = "@* bar *@"; |
 
 Source Location: (310:12,45 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml)
 |bar|
-Generated Location: (2335:66,45 [3] )
+Generated Location: (2361:66,45 [3] )
 |bar|
 
 Source Location: (323:14,2 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml)
 |a|
-Generated Location: (2506:73,6 [1] )
+Generated Location: (2532:73,6 [1] )
 |a|
 
 Source Location: (328:14,7 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml)
 |b|
-Generated Location: (2507:73,7 [1] )
+Generated Location: (2533:73,7 [1] )
 |b|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_Runtime.codegen.cs
index 38b59d46c5b..f539cc7203b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a9d16af76d3b638c489fe4ce4511816619e1713e1515ec0ce13b898e140dde7d"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_Runtime.ir.txt
index 931613bfaf4..160886a6763 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RazorComments_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RazorComments - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (38:1,0 [15] RazorComments.cshtml)
                     LazyIntermediateToken - (38:1,0 [2] RazorComments.cshtml) - Html - <p
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.codegen.cs
index b0efd884295..7a84bf0ce1a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.ir.txt
index b2490b90085..d5ac9236574 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.mappings.txt
index 9dd822ad066..b65af31345d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (17:0,17 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective.cshtml)
 |*, TestAssembly|
-Generated Location: (1263:26,38 [15] )
+Generated Location: (1289:26,38 [15] )
 |*, TestAssembly|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_Runtime.codegen.cs
index fa612a6507c..6f7e93ca4a6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "66adeb0c482cc6a637c59000352e67b637c2f01d476e877553f414561d86016c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_Runtime.ir.txt
index f5d7162589f..82c6e13c4b9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/RemoveTagHelperDirective_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_RemoveTagHelperDirective - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
             Inject - 
             Inject - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.codegen.cs
index e5ab174b090..f6fcb8a39a3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.ir.txt
index 516dd0b17ca..11abba1fe2d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.mappings.txt
index 180bf3fb650..c855ae03328 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_DesignTime.mappings.txt
@@ -1,44 +1,44 @@
 Source Location: (89:6,9 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |Section2|
-Generated Location: (1199:26,22 [8] )
+Generated Location: (1225:26,22 [8] )
 |Section2|
 
 Source Location: (172:10,9 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |Section1|
-Generated Location: (1462:36,22 [8] )
+Generated Location: (1488:36,22 [8] )
 |Section1|
 
 Source Location: (235:14,9 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |NestedDelegates|
-Generated Location: (1725:46,22 [15] )
+Generated Location: (1751:46,22 [15] )
 |NestedDelegates|
 
 Source Location: (2:0,2 [44] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |
     Layout = "_SectionTestLayout.cshtml"
 |
-Generated Location: (2230:63,2 [44] )
+Generated Location: (2256:63,2 [44] )
 |
     Layout = "_SectionTestLayout.cshtml"
 |
 
 Source Location: (123:7,22 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |thing|
-Generated Location: (2523:72,22 [5] )
+Generated Location: (2549:72,22 [5] )
 |thing|
 
 Source Location: (260:15,6 [27] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 | Func<dynamic, object> f = |
-Generated Location: (2908:85,6 [27] )
+Generated Location: (2934:85,6 [27] )
 | Func<dynamic, object> f = |
 
 Source Location: (295:15,41 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |item|
-Generated Location: (3249:93,41 [4] )
+Generated Location: (3275:93,41 [4] )
 |item|
 
 Source Location: (306:15,52 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml)
 |; |
-Generated Location: (3500:102,52 [2] )
+Generated Location: (3526:102,52 [2] )
 |; |
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.codegen.cs
index e3100e5e2cf..eafa4743dd4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "0e3bbd637055ed3caa71a09baf3eb8ab5fc1f8057091dcd2c2adbfa3de691076"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.ir.txt
index d5d878ffa2f..8541321a79b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Sections_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Sections - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [44] Sections.cshtml)
                     LazyIntermediateToken - (2:0,2 [44] Sections.cshtml) - CSharp - \n    Layout = "_SectionTestLayout.cshtml"\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.codegen.cs
index dfa27ebac0c..4b3af1ea35c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.ir.txt
index c16f21af6ef..4d6b4ee172b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.mappings.txt
index 9e334179661..2e6e5659a87 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_DesignTime.mappings.txt
@@ -1,5 +1,5 @@
 Source Location: (14:0,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers.cshtml)
 |*, TestAssembly|
-Generated Location: (1705:32,38 [15] )
+Generated Location: (1731:32,38 [15] )
 |*, TestAssembly|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_Runtime.codegen.cs
index 85573f6035e..9afced309db 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "cc678f2e7fe9415c8275fdb0aa72ebab925dcf86a98dcdcfcb8939af2a5f2a9e"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("value", "Hello", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.SingleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_Runtime.ir.txt
index 5522ec595d5..43d6897a07f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleTagHelpers_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleTagHelpers - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - value - Hello - HtmlAttributeValueStyle.SingleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - type - text - HtmlAttributeValueStyle.SingleQuotes
             DefaultTagHelperRuntime - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.codegen.cs
index 76e7d8ca04c..89bf4df8213 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.ir.txt
index d5ff76e612c..51b30c8b69d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.mappings.txt
index 9741f1f4134..4cba94c1349 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_DesignTime.mappings.txt
@@ -2,7 +2,7 @@
 |if (true)
 {
 	|
-Generated Location: (1458:33,1 [15] )
+Generated Location: (1484:33,1 [15] )
 |if (true)
 {
 	|
@@ -10,7 +10,7 @@ Generated Location: (1458:33,1 [15] )
 Source Location: (27:2,12 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf.cshtml)
 |
 }|
-Generated Location: (1648:42,12 [3] )
+Generated Location: (1674:42,12 [3] )
 |
 }|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_Runtime.codegen.cs
index 26f0e9af95a..59517fa892e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "6c2fffb4b344ac4d9af24dc64c830fcfcba50e2ae9c69a95e54910b4c9225820"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_Runtime.ir.txt
index 828c1e151d1..2811d9aca1f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SimpleUnspacedIf_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SimpleUnspacedIf - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (1:0,1 [14] SimpleUnspacedIf.cshtml)
                     LazyIntermediateToken - (1:0,1 [14] SimpleUnspacedIf.cshtml) - CSharp - if (true)\n{\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.codegen.cs
index d8ee96ba3a0..e1ff3f6cf6f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.ir.txt
index a6a881fda8f..79a28126563 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.mappings.txt
index af7664ee49e..88f868ff1d9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_DesignTime.mappings.txt
@@ -1,23 +1,23 @@
 Source Location: (24:2,2 [44] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |
     if (DateTime.Now.ToBinary() % 2 == 0) |
-Generated Location: (1504:33,2 [44] )
+Generated Location: (1530:33,2 [44] )
 |
     if (DateTime.Now.ToBinary() % 2 == 0) |
 
 Source Location: (70:3,44 [32] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |"Current time is divisible by 2"|
-Generated Location: (1770:41,44 [32] )
+Generated Location: (1796:41,44 [32] )
 |"Current time is divisible by 2"|
 
 Source Location: (103:3,77 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 | else |
-Generated Location: (2058:48,77 [6] )
+Generated Location: (2084:48,77 [6] )
 | else |
 
 Source Location: (110:3,84 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |DateTime.Now|
-Generated Location: (2326:55,84 [12] )
+Generated Location: (2352:55,84 [12] )
 |DateTime.Now|
 
 Source Location: (122:3,96 [381] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
@@ -38,7 +38,7 @@ Source Location: (122:3,96 [381] TestFiles/IntegrationTests/CodeGenerationIntegr
         i--;
 
     |
-Generated Location: (2613:62,96 [381] )
+Generated Location: (2639:62,96 [381] )
 |
 
     object Bar()
@@ -60,18 +60,18 @@ Generated Location: (2613:62,96 [381] )
 Source Location: (504:19,5 [47] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |foreach (var item in new[] {"hello"})
         |
-Generated Location: (3178:85,5 [47] )
+Generated Location: (3204:85,5 [47] )
 |foreach (var item in new[] {"hello"})
         |
 
 Source Location: (552:20,9 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |item|
-Generated Location: (3413:93,9 [4] )
+Generated Location: (3439:93,9 [4] )
 |item|
 
 Source Location: (556:20,13 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 ||
-Generated Location: (3610:100,13 [0] )
+Generated Location: (3636:100,13 [0] )
 ||
 
 Source Location: (556:20,13 [20] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
@@ -79,7 +79,7 @@ Source Location: (556:20,13 [20] TestFiles/IntegrationTests/CodeGenerationIntegr
 
     do
         |
-Generated Location: (3802:107,13 [20] )
+Generated Location: (3828:107,13 [20] )
 |
 
     do
@@ -87,7 +87,7 @@ Generated Location: (3802:107,13 [20] )
 
 Source Location: (577:23,9 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |currentCount|
-Generated Location: (4010:117,9 [12] )
+Generated Location: (4036:117,9 [12] )
 |currentCount|
 
 Source Location: (589:23,21 [174] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
@@ -99,7 +99,7 @@ Source Location: (589:23,21 [174] TestFiles/IntegrationTests/CodeGenerationInteg
 
     using (var reader = new System.IO.StreamReader("/something"))
         |
-Generated Location: (4223:124,21 [174] )
+Generated Location: (4249:124,21 [174] )
 |
     while (--currentCount >= 0);
 
@@ -111,14 +111,14 @@ Generated Location: (4223:124,21 [174] )
 
 Source Location: (764:30,9 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |reader.ReadToEnd()|
-Generated Location: (4585:138,9 [18] )
+Generated Location: (4611:138,9 [18] )
 |reader.ReadToEnd()|
 
 Source Location: (782:30,27 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |
 
     |
-Generated Location: (4810:145,27 [8] )
+Generated Location: (4836:145,27 [8] )
 |
 
     |
@@ -126,74 +126,74 @@ Generated Location: (4810:145,27 [8] )
 Source Location: (791:32,5 [36] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |lock (this)
         currentCount++;|
-Generated Location: (5002:154,5 [36] )
+Generated Location: (5028:154,5 [36] )
 |lock (this)
         currentCount++;|
 
 Source Location: (827:33,23 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |
 |
-Generated Location: (5240:162,23 [2] )
+Generated Location: (5266:162,23 [2] )
 |
 |
 
 Source Location: (1674:76,1 [34] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |for (var i = 0; i < 10; i++)
     |
-Generated Location: (5420:169,1 [34] )
+Generated Location: (5446:169,1 [34] )
 |for (var i = 0; i < 10; i++)
     |
 
 Source Location: (1709:77,5 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |i|
-Generated Location: (5639:177,6 [1] )
+Generated Location: (5665:177,6 [1] )
 |i|
 
 Source Location: (1710:77,6 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 ||
-Generated Location: (5826:184,6 [0] )
+Generated Location: (5852:184,6 [0] )
 ||
 
 Source Location: (1715:79,1 [43] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |foreach (var item in new[] {"hello"})
     |
-Generated Location: (6006:191,1 [43] )
+Generated Location: (6032:191,1 [43] )
 |foreach (var item in new[] {"hello"})
     |
 
 Source Location: (1759:80,5 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |item|
-Generated Location: (6234:199,6 [4] )
+Generated Location: (6260:199,6 [4] )
 |item|
 
 Source Location: (1763:80,9 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 ||
-Generated Location: (6427:206,9 [0] )
+Generated Location: (6453:206,9 [0] )
 ||
 
 Source Location: (1768:82,1 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |do
     |
-Generated Location: (6607:213,1 [8] )
+Generated Location: (6633:213,1 [8] )
 |do
     |
 
 Source Location: (1777:83,5 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |currentCount|
-Generated Location: (6800:221,6 [12] )
+Generated Location: (6826:221,6 [12] )
 |currentCount|
 
 Source Location: (1789:83,17 [30] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |
 while (--currentCount >= 0);|
-Generated Location: (7009:228,17 [30] )
+Generated Location: (7035:228,17 [30] )
 |
 while (--currentCount >= 0);|
 
 Source Location: (1824:86,1 [49] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |while (--currentCount <= 10)
     currentCount++;|
-Generated Location: (7219:236,1 [49] )
+Generated Location: (7245:236,1 [49] )
 |while (--currentCount <= 10)
     currentCount++;|
 
@@ -201,38 +201,38 @@ Source Location: (1878:89,1 [99] TestFiles/IntegrationTests/CodeGenerationIntegr
 |using (var reader = new System.IO.StreamReader("/something"))
     // Reading the entire file
     |
-Generated Location: (7448:244,1 [99] )
+Generated Location: (7474:244,1 [99] )
 |using (var reader = new System.IO.StreamReader("/something"))
     // Reading the entire file
     |
 
 Source Location: (1978:91,5 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |reader.ReadToEnd()|
-Generated Location: (7732:253,6 [18] )
+Generated Location: (7758:253,6 [18] )
 |reader.ReadToEnd()|
 
 Source Location: (1996:91,23 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 ||
-Generated Location: (7953:260,23 [0] )
+Generated Location: (7979:260,23 [0] )
 ||
 
 Source Location: (2001:93,1 [32] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |lock (this)
     currentCount++;|
-Generated Location: (8133:267,1 [32] )
+Generated Location: (8159:267,1 [32] )
 |lock (this)
     currentCount++;|
 
 Source Location: (2038:96,1 [10] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |if (true) |
-Generated Location: (8345:275,1 [10] )
+Generated Location: (8371:275,1 [10] )
 |if (true) |
 
 Source Location: (2049:96,12 [33] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |@GitHubUserName <p>Hello!</p>
 
 |
-Generated Location: (8546:282,12 [33] )
+Generated Location: (8572:282,12 [33] )
 |@GitHubUserName <p>Hello!</p>
 
 |
@@ -240,18 +240,18 @@ Generated Location: (8546:282,12 [33] )
 Source Location: (2083:98,1 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |if (true) 
     |
-Generated Location: (8757:290,1 [16] )
+Generated Location: (8783:290,1 [16] )
 |if (true) 
     |
 
 Source Location: (2118:99,23 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |DateTime.Now|
-Generated Location: (8976:298,23 [12] )
+Generated Location: (9002:298,23 [12] )
 |DateTime.Now|
 
 Source Location: (2136:100,0 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 ||
-Generated Location: (9169:305,0 [0] )
+Generated Location: (9195:305,0 [0] )
 ||
 
 Source Location: (846:36,12 [386] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
@@ -271,7 +271,7 @@ Source Location: (846:36,12 [386] TestFiles/IntegrationTests/CodeGenerationInteg
 
         foreach (var item in new[] {"hello"})
             |
-Generated Location: (9407:313,12 [386] )
+Generated Location: (9433:313,12 [386] )
 |
     public string Foo()
     {
@@ -291,7 +291,7 @@ Generated Location: (9407:313,12 [386] )
 
 Source Location: (1233:51,13 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |item|
-Generated Location: (9985:335,13 [4] )
+Generated Location: (10011:335,13 [4] )
 |item|
 
 Source Location: (1237:51,17 [28] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
@@ -299,7 +299,7 @@ Source Location: (1237:51,17 [28] TestFiles/IntegrationTests/CodeGenerationInteg
 
         do
             |
-Generated Location: (10186:342,17 [28] )
+Generated Location: (10212:342,17 [28] )
 |
 
         do
@@ -307,7 +307,7 @@ Generated Location: (10186:342,17 [28] )
 
 Source Location: (1266:54,13 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |currentCount|
-Generated Location: (10406:352,13 [12] )
+Generated Location: (10432:352,13 [12] )
 |currentCount|
 
 Source Location: (1278:54,25 [194] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
@@ -319,7 +319,7 @@ Source Location: (1278:54,25 [194] TestFiles/IntegrationTests/CodeGenerationInte
 
         using (var reader = new System.IO.StreamReader("/something"))
             |
-Generated Location: (10623:359,25 [194] )
+Generated Location: (10649:359,25 [194] )
 |
         while (--currentCount >= 0);
 
@@ -331,7 +331,7 @@ Generated Location: (10623:359,25 [194] )
 
 Source Location: (1473:61,13 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
 |reader.ReadToEnd()|
-Generated Location: (11009:373,13 [18] )
+Generated Location: (11035:373,13 [18] )
 |reader.ReadToEnd()|
 
 Source Location: (1491:61,31 [177] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml)
@@ -349,7 +349,7 @@ Source Location: (1491:61,31 [177] TestFiles/IntegrationTests/CodeGenerationInte
     }
 
 |
-Generated Location: (11238:380,31 [177] )
+Generated Location: (11264:380,31 [177] )
 |
 
         lock (this)
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_Runtime.codegen.cs
index 7e716f7ea42..ed2da220f72 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a66d420fecd4b03184392e5ffae1b5cbd3050be4e5c1a1d641eb271a35d9099d"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_Runtime.ir.txt
index e9c7fa72f17..91f0e1309b0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleLineControlFlowStatements_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleLineControlFlowStatements - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [22] SingleLineControlFlowStatements.cshtml)
                     LazyIntermediateToken - (0:0,0 [2] SingleLineControlFlowStatements.cshtml) - Html - <p
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.codegen.cs
index 7319dca60d1..5a426af5629 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.ir.txt
index d89a1e77f7a..11b34d1f5d3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.mappings.txt
index 87ee93f6caa..bd2332ebd08 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1802:32,37 [17] )
+Generated Location: (1828:32,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (67:3,28 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes.cshtml)
 |1337|
-Generated Location: (2461:50,33 [4] )
+Generated Location: (2487:50,33 [4] )
 |1337|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_Runtime.codegen.cs
index 5095900078d..88ba9502a23 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "911da9fbec044f6d3567d334c5ef47d9311c69940873e9ceb6ba007b65164b71"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("class", new global::Microsoft.AspNetCore.Html.HtmlString("Hello World"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_Runtime.ir.txt
index f8242412415..5b09edff084 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelperWithNewlineBeforeAttributes_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelperWithNewlineBeforeAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - class - Hello World - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.codegen.cs
index 8a600625958..23f5bcac2c4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.ir.txt
index 29e78d928b7..2364c72da6b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.mappings.txt
index d78b043a4f3..fc44f126ca6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1721:32,37 [17] )
+Generated Location: (1747:32,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (63:2,28 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper.cshtml)
 |1337|
-Generated Location: (2353:50,33 [4] )
+Generated Location: (2379:50,33 [4] )
 |1337|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_Runtime.codegen.cs
index 5d33bd05fe5..f782f32a44c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "07221c920388e192f27500b1efb178559390c71d91890dc7624909ff0a7e62a0"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("class", new global::Microsoft.AspNetCore.Html.HtmlString("Hello World"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_Runtime.ir.txt
index f1dea66c897..21781c9f6d4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SingleTagHelper_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SingleTagHelper - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - class - Hello World - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.codegen.cs
index 2be5e93240e..37045db077c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.ir.txt
index 9cdf9b9a8ea..3005c7a5ab2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.mappings.txt
index 547965436a9..887f794170a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (2022:85,9 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals.cshtml)
 |WriteLiteralsToInHere|
-Generated Location: (1218:26,22 [21] )
+Generated Location: (1244:26,22 [21] )
 |WriteLiteralsToInHere|
 
 Source Location: (5701:205,9 [25] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals.cshtml)
 |WriteLiteralsToInHereAlso|
-Generated Location: (1501:36,22 [25] )
+Generated Location: (1527:36,22 [25] )
 |WriteLiteralsToInHereAlso|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_Runtime.codegen.cs
index c86e63f3e41..1ca6da65524 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "69f3680900f8c303ec50c37449fea720166f0f13b35f665d03575ab725ccabe0"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_Runtime.ir.txt
index b605d37fcc7..d722c24d0b4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/StringLiterals_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_StringLiterals - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (0:0,0 [2013] StringLiterals.cshtml)
                     LazyIntermediateToken - (0:0,0 [2] StringLiterals.cshtml) - Html - <p
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.codegen.cs
index e156ab35b5d..9b8fe2a4c46 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.ir.txt
index 05bb964db21..ff8e91b22e6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.mappings.txt
index 836a67568e9..c635c0be02b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_DesignTime.mappings.txt
@@ -3,7 +3,7 @@
 {
     case { Year: 2022 }:
         |
-Generated Location: (1509:33,1 [69] )
+Generated Location: (1535:33,1 [69] )
 |switch (DateTimeOffset.UtcNow)
 {
     case { Year: 2022 }:
@@ -19,7 +19,7 @@ Source Location: (159:3,97 [180] TestFiles/IntegrationTests/CodeGenerationIntegr
     case global::Test:
         break;
 }|
-Generated Location: (1855:43,97 [180] )
+Generated Location: (1881:43,97 [180] )
 |
         break;
     case [{ Test: true }]:
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_Runtime.codegen.cs
index 73fc9577339..5aa3b37ceff 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "9168a1bd59651e5e083cf79f3271ea80436a9539f637069ba388b14b675f3b39"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_Runtime.ir.txt
index e91c0995e2e..6df0b582b3a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SwitchExpression_RecursivePattern_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SwitchExpression_RecursivePattern - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (1:0,1 [61] SwitchExpression_RecursivePattern.cshtml)
                     LazyIntermediateToken - (1:0,1 [61] SwitchExpression_RecursivePattern.cshtml) - CSharp - switch (DateTimeOffset.UtcNow)\n{\n    case { Year: 2022 }:\n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.codegen.cs
index e09633c3bf6..71645b32c64 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.ir.txt
index 1969f772019..f7fac4b18e0 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.CatchAllTagHelper - __TestNamespace_CatchAllTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.mappings.txt
index 2920c2cdfec..7bfa98ed10b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_DesignTime.mappings.txt
@@ -1,25 +1,25 @@
 Source Location: (14:0,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml)
 |*, TestAssembly|
-Generated Location: (1754:32,38 [15] )
+Generated Location: (1780:32,38 [15] )
 |*, TestAssembly|
 
 Source Location: (302:11,18 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml)
 |items|
-Generated Location: (2419:50,46 [5] )
+Generated Location: (2445:50,46 [5] )
 |items|
 
 Source Location: (351:12,20 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml)
 |items|
-Generated Location: (2826:59,47 [5] )
+Generated Location: (2852:59,47 [5] )
 |items|
 
 Source Location: (405:13,23 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml)
 |doSomething()|
-Generated Location: (3229:68,43 [13] )
+Generated Location: (3255:68,43 [13] )
 |doSomething()|
 
 Source Location: (487:14,24 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml)
 |doSomething()|
-Generated Location: (3640:77,43 [13] )
+Generated Location: (3666:77,43 [13] )
 |doSomething()|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_Runtime.codegen.cs
index 9fccf013742..b7c9124e5f6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "6670062036b3e25775cee4af27e2b53b638aff4fd93c3087d0cfb1947fd5e738"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("[item]", new global::Microsoft.AspNetCore.Html.HtmlString("items"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_Runtime.ir.txt
index 11b5af7e683..ebb3fe58432 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/SymbolBoundAttributes_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_SymbolBoundAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - [item] - items - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - [(item)] - items - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - (click) - doSomething() - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.codegen.cs
index 60674114429..4922b3c6244 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.ir.txt
index ec2d23a0973..160465d71ef 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.MyTagHelper - __TestNamespace_MyTagHelper
             FieldDeclaration -  - private - global::TestNamespace.NestedTagHelper - __TestNamespace_NestedTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.mappings.txt
index 8686ec967fb..38e534426cc 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_DesignTime.mappings.txt
@@ -1,39 +1,39 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1823:33,37 [17] )
+Generated Location: (1849:33,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (82:6,9 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml)
 |MySection|
-Generated Location: (2097:43,22 [9] )
+Generated Location: (2123:43,22 [9] )
 |MySection|
 
 Source Location: (388:14,13 [13] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml)
 |nestedsection|
-Generated Location: (2372:53,22 [13] )
+Generated Location: (2398:53,22 [13] )
 |nestedsection|
 
 Source Location: (37:2,2 [31] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml)
 |
     var code = "some code";
 |
-Generated Location: (2886:70,2 [31] )
+Generated Location: (2912:70,2 [31] )
 |
     var code = "some code";
 |
 
 Source Location: (313:10,56 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml)
 |code|
-Generated Location: (3213:79,56 [4] )
+Generated Location: (3239:79,56 [4] )
 |code|
 
 Source Location: (157:8,51 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml)
 |DateTime.Now|
-Generated Location: (3725:89,51 [12] )
+Generated Location: (3751:89,51 [12] )
 |DateTime.Now|
 
 Source Location: (203:8,97 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml)
 |DateTime.Now|
-Generated Location: (4076:97,97 [12] )
+Generated Location: (4102:97,97 [12] )
 |DateTime.Now|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_Runtime.codegen.cs
index 15bf9ec2b29..8d49de1065f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "66a1fd3b9b40b304a7d1864845d2b7ab0f5f5c8a98d810ff8f97a245644661a9"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_Runtime.ir.txt
index 3a0e62a7b4c..e46cbc8a484 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersInSection_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersInSection - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.MyTagHelper - __TestNamespace_MyTagHelper
             FieldDeclaration -  - private - global::TestNamespace.NestedTagHelper - __TestNamespace_NestedTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.codegen.cs
index 8c0ebff4477..5053a538c73 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.ir.txt
index 7bf14af9334..d87a9e04b84 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.mappings.txt
index c04d4923d0d..c5cfdf91938 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_DesignTime.mappings.txt
@@ -1,10 +1,10 @@
 Source Location: (14:0,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes.cshtml)
 |*, TestAssembly|
-Generated Location: (1744:32,38 [15] )
+Generated Location: (1770:32,38 [15] )
 |*, TestAssembly|
 
 Source Location: (57:2,18 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes.cshtml)
 |Hello|
-Generated Location: (2354:50,18 [5] )
+Generated Location: (2380:50,18 [5] )
 |Hello|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_Runtime.codegen.cs
index 2979924754d..145f118001a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "13f5d05e90dce1e87481ae84a605a64f0292501f08d4449df1105d14bd068161"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", new global::Microsoft.AspNetCore.Html.HtmlString("text"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.SingleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_Runtime.ir.txt
index c65bdc4ddf2..301a41abc2d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithBoundAttributes_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithBoundAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - type - text - HtmlAttributeValueStyle.SingleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.codegen.cs
index f19f4b6cf7a..dd71e4d44ee 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.ir.txt
index c606b65b561..a82c21cc4e4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
             FieldDeclaration -  - private - global::DivTagHelper - __DivTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.mappings.txt
index 453d5fe0416..ec28e82a2e3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (14:0,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes.cshtml)
 |*, TestAssembly|
-Generated Location: (1807:33,38 [15] )
+Generated Location: (1833:33,38 [15] )
 |*, TestAssembly|
 
 Source Location: (111:3,15 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes.cshtml)
 |foo|
-Generated Location: (2615:54,15 [3] )
+Generated Location: (2641:54,15 [3] )
 |foo|
 
 Source Location: (126:3,30 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes.cshtml)
 |bar|
-Generated Location: (2828:61,30 [3] )
+Generated Location: (2854:61,30 [3] )
 |bar|
 
 Source Location: (225:4,61 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes.cshtml)
 |foo|
-Generated Location: (3148:69,61 [3] )
+Generated Location: (3174:69,61 [3] )
 |foo|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_Runtime.codegen.cs
index de62361e52c..5d10f1a5f56 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "07dfad59bc192742aea1638b2d08142a1c9a2201583a31cd0ea0ad5342acffca"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("bound", "hello", global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_Runtime.ir.txt
index e528482375a..9d9a92f7113 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithDataDashAttributes_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithDataDashAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_0 - bound - hello - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - data-one - 1 - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - data-two - 2 - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.codegen.cs
index 70ee5fcfabc..4f732ca20f2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.ir.txt
index 28c97f25235..d71fe2bc71d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.mappings.txt
index c2be32a5cae..d601ec59a75 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_DesignTime.mappings.txt
@@ -1,15 +1,15 @@
 Source Location: (14:0,14 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix.cshtml)
 |*, TestAssembly|
-Generated Location: (1717:32,38 [15] )
+Generated Location: (1743:32,38 [15] )
 |*, TestAssembly|
 
 Source Location: (48:1,17 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix.cshtml)
 |cool:|
-Generated Location: (2007:42,38 [5] )
+Generated Location: (2033:42,38 [5] )
 |cool:|
 
 Source Location: (86:3,23 [5] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix.cshtml)
 |Hello|
-Generated Location: (2603:60,23 [5] )
+Generated Location: (2629:60,23 [5] )
 |Hello|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_Runtime.codegen.cs
index f1c99f01501..2fc39350b72 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "4073ac6b7d09e02c4f015f3b452a099682d34b86878f507ef1a6e8585c0d6e96"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", new global::Microsoft.AspNetCore.Html.HtmlString("text"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.SingleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_Runtime.ir.txt
index f6037d9acf3..d4e6fec2952 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithPrefix_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithPrefix - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - type - text - HtmlAttributeValueStyle.SingleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.codegen.cs
index 5bc212beab5..ff75b745ddf 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.ir.txt
index 2083da92fd8..e205f62ac64 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::DivTagHelper - __DivTagHelper
             FieldDeclaration -  - private - global::InputTagHelper - __InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.mappings.txt
index a080090424f..b25e804087a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_DesignTime.mappings.txt
@@ -1,6 +1,6 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1776:33,37 [17] )
+Generated Location: (1802:33,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (333:12,6 [66] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate.cshtml)
@@ -8,7 +8,7 @@ Source Location: (333:12,6 [66] TestFiles/IntegrationTests/CodeGenerationIntegra
         RenderTemplate(
             "Template: ",
             |
-Generated Location: (2294:50,6 [66] )
+Generated Location: (2320:50,6 [66] )
 |
         RenderTemplate(
             "Template: ",
@@ -16,13 +16,13 @@ Generated Location: (2294:50,6 [66] )
 
 Source Location: (427:15,40 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate.cshtml)
 |item|
-Generated Location: (2683:61,40 [4] )
+Generated Location: (2709:61,40 [4] )
 |item|
 
 Source Location: (482:15,95 [8] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate.cshtml)
 |);
     |
-Generated Location: (3297:74,95 [8] )
+Generated Location: (3323:74,95 [8] )
 |);
     |
 
@@ -35,7 +35,7 @@ Source Location: (47:2,12 [268] TestFiles/IntegrationTests/CodeGenerationIntegra
         helperResult.WriteTo(Output, HtmlEncoder);
     }
 |
-Generated Location: (3682:86,12 [268] )
+Generated Location: (3708:86,12 [268] )
 |
     public void RenderTemplate(string title, Func<string, HelperResult> template)
     {
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_Runtime.codegen.cs
index 6f2062f3f18..cda7aec589b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "ad0a6817d6431c932ff123cbd5e19efc157aa4994025b91acf744cf1a5d02dd5"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("type", new global::Microsoft.AspNetCore.Html.HtmlString("checkbox"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_Runtime.ir.txt
index 28f96034d86..b8f63b7a76f 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithTemplate_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithTemplate - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - type - checkbox - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_1 - checked - true - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - condition - true - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.codegen.cs
index 72cba17d65b..55ca1b9f78c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.ir.txt
index 769c880e7f2..51db26f9ae2 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             FieldDeclaration -  - private - global::TestNamespace.InputTagHelper - __TestNamespace_InputTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.mappings.txt
index 8ecc40f9f2f..9d1245a1263 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_DesignTime.mappings.txt
@@ -1,20 +1,20 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1961:34,37 [17] )
+Generated Location: (1987:34,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (74:5,21 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes.cshtml)
 |1337|
-Generated Location: (2615:52,33 [4] )
+Generated Location: (2641:52,33 [4] )
 |1337|
 
 Source Location: (99:6,19 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes.cshtml)
 |true|
-Generated Location: (2823:59,19 [4] )
+Generated Location: (2849:59,19 [4] )
 |true|
 
 Source Location: (186:10,11 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes.cshtml)
 |1234|
-Generated Location: (3649:73,33 [4] )
+Generated Location: (3675:73,33 [4] )
 |1234|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_Runtime.codegen.cs
index f77e9c33806..db86c83c3f6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "d9b84e2f98477223e105fd1bb35f0717dea379bb406844d36d35a9220d093ff3"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("class", new global::Microsoft.AspNetCore.Html.HtmlString("Hello World"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_Runtime.ir.txt
index 94d36b268d8..be570989777 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TagHelpersWithWeirdlySpacedAttributes_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TagHelpersWithWeirdlySpacedAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - class - Hello World - HtmlAttributeValueStyle.DoubleQuotes
             PreallocatedTagHelperPropertyValue -  - __tagHelperAttribute_1 - type - text - HtmlAttributeValueStyle.SingleQuotes
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_2 - data-content - hello - HtmlAttributeValueStyle.DoubleQuotes
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.codegen.cs
index 3c3ff9fc50d..97c1d4aafd7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.ir.txt
index 813a2146079..d77bbb5c394 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.mappings.txt
index df99f1c6f3e..9033e7db672 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_DesignTime.mappings.txt
@@ -1,19 +1,19 @@
 Source Location: (2:0,2 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags.cshtml)
 |
     |
-Generated Location: (1423:33,2 [6] )
+Generated Location: (1449:33,2 [6] )
 |
     |
 
 Source Location: (41:1,37 [0] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags.cshtml)
 ||
-Generated Location: (1617:41,37 [0] )
+Generated Location: (1643:41,37 [0] )
 ||
 
 Source Location: (59:1,55 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags.cshtml)
 |
 |
-Generated Location: (1823:48,55 [2] )
+Generated Location: (1849:48,55 [2] )
 |
 |
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_Runtime.codegen.cs
index 26cfa5227f6..ab5730700bf 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "d02f15e5b65cbcc2185f5f77ae6e69a01492b23120b97f0ffe06d4f34412b670"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_Runtime.ir.txt
index 0fb8dc617b2..2fff147dd8e 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Tags_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Tags - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [2] Tags.cshtml)
                     LazyIntermediateToken - (2:0,2 [2] Tags.cshtml) - CSharp - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.codegen.cs
index e4a36991214..d6ea66c42d9 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.ir.txt
index 8edd1dd567c..1ae5ece059d 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.mappings.txt
index bddf6b26c60..141b5fd4dbe 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_DesignTime.mappings.txt
@@ -1,149 +1,149 @@
 Source Location: (284:10,2 [34] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |
     Func<dynamic, object> foo = |
-Generated Location: (1439:33,2 [34] )
+Generated Location: (1465:33,2 [34] )
 |
     Func<dynamic, object> foo = |
 
 Source Location: (337:11,51 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |item|
-Generated Location: (1794:42,51 [4] )
+Generated Location: (1820:42,51 [4] )
 |item|
 
 Source Location: (349:11,63 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |;
     |
-Generated Location: (2049:51,63 [7] )
+Generated Location: (2075:51,63 [7] )
 |;
     |
 
 Source Location: (357:12,5 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |foo("")|
-Generated Location: (2219:59,6 [7] )
+Generated Location: (2245:59,6 [7] )
 |foo("")|
 
 Source Location: (364:12,12 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |
 |
-Generated Location: (2396:66,12 [2] )
+Generated Location: (2422:66,12 [2] )
 |
 |
 
 Source Location: (373:15,2 [35] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 | 
     Func<dynamic, object> bar = |
-Generated Location: (2555:73,2 [35] )
+Generated Location: (2581:73,2 [35] )
 | 
     Func<dynamic, object> bar = |
 
 Source Location: (420:16,44 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |item|
-Generated Location: (2904:82,44 [4] )
+Generated Location: (2930:82,44 [4] )
 |item|
 
 Source Location: (435:16,59 [7] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |;
     |
-Generated Location: (3155:91,59 [7] )
+Generated Location: (3181:91,59 [7] )
 |;
     |
 
 Source Location: (443:17,5 [14] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |bar("myclass")|
-Generated Location: (3325:99,6 [14] )
+Generated Location: (3351:99,6 [14] )
 |bar("myclass")|
 
 Source Location: (457:17,19 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |
 |
-Generated Location: (3516:106,19 [2] )
+Generated Location: (3542:106,19 [2] )
 |
 |
 
 Source Location: (472:21,2 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |Repeat(10, |
-Generated Location: (3679:113,6 [11] )
+Generated Location: (3705:113,6 [11] )
 |Repeat(10, |
 
 Source Location: (495:21,25 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |item|
-Generated Location: (3921:116,25 [4] )
+Generated Location: (3947:116,25 [4] )
 |item|
 
 Source Location: (504:21,34 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |)|
-Generated Location: (3982:122,1 [1] )
+Generated Location: (4008:122,1 [1] )
 |)|
 
 Source Location: (523:25,1 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |Repeat(10,
     |
-Generated Location: (4147:129,6 [16] )
+Generated Location: (4173:129,6 [16] )
 |Repeat(10,
     |
 
 Source Location: (556:26,21 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |item|
-Generated Location: (4390:133,21 [4] )
+Generated Location: (4416:133,21 [4] )
 |item|
 
 Source Location: (577:27,0 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |)|
-Generated Location: (4451:139,1 [1] )
+Generated Location: (4477:139,1 [1] )
 |)|
 
 Source Location: (594:31,1 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |Repeat(10,
     |
-Generated Location: (4616:146,6 [16] )
+Generated Location: (4642:146,6 [16] )
 |Repeat(10,
     |
 
 Source Location: (628:32,22 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |item|
-Generated Location: (4860:150,22 [4] )
+Generated Location: (4886:150,22 [4] )
 |item|
 
 Source Location: (650:33,0 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |)|
-Generated Location: (4921:156,1 [1] )
+Generated Location: (4947:156,1 [1] )
 |)|
 
 Source Location: (667:37,1 [16] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |Repeat(10,
     |
-Generated Location: (5086:163,6 [16] )
+Generated Location: (5112:163,6 [16] )
 |Repeat(10,
     |
 
 Source Location: (702:38,23 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |item|
-Generated Location: (5331:167,23 [4] )
+Generated Location: (5357:167,23 [4] )
 |item|
 
 Source Location: (724:39,0 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |)|
-Generated Location: (5392:173,1 [1] )
+Generated Location: (5418:173,1 [1] )
 |)|
 
 Source Location: (748:44,5 [11] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |Repeat(10, |
-Generated Location: (5557:180,6 [11] )
+Generated Location: (5583:180,6 [11] )
 |Repeat(10, |
 
 Source Location: (781:45,15 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |item|
-Generated Location: (5789:183,15 [4] )
+Generated Location: (5815:183,15 [4] )
 |item|
 
 Source Location: (797:46,10 [18] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |var parent = item;|
-Generated Location: (5961:190,10 [18] )
+Generated Location: (5987:190,10 [18] )
 |var parent = item;|
 
 Source Location: (956:51,9 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
 |)|
-Generated Location: (6035:196,1 [1] )
+Generated Location: (6061:196,1 [1] )
 |)|
 
 Source Location: (12:0,12 [265] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml)
@@ -156,7 +156,7 @@ Source Location: (12:0,12 [265] TestFiles/IntegrationTests/CodeGenerationIntegra
         });
     }
 |
-Generated Location: (6254:205,12 [265] )
+Generated Location: (6280:205,12 [265] )
 |
     public HelperResult Repeat(int times, Func<int, object> template) {
         return new HelperResult((writer) => {
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_Runtime.codegen.cs
index a3203a7bd16..136795030c7 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "695d7f5579e84a072c03d019783c98e393c52ec6a24e022eb8ecb663955abd5c"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_Runtime.ir.txt
index c283b786e9c..0f21f41483a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Templates_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Templates - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (280:9,0 [2] Templates.cshtml)
                     LazyIntermediateToken - (280:9,0 [2] Templates.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.codegen.cs
index bbc2e4fc300..c64ef00b8e8 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #line hidden
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.ir.txt
index 57515ffd583..bc5d5f0e465 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
             DesignTimeDirective - 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.mappings.txt
index 054f953d977..93712abbcf3 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_DesignTime.mappings.txt
@@ -1,6 +1,6 @@
 Source Location: (14:0,14 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |"*, TestAssembly"|
-Generated Location: (1772:32,37 [17] )
+Generated Location: (1798:32,37 [17] )
 |"*, TestAssembly"|
 
 Source Location: (35:1,2 [59] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
@@ -8,7 +8,7 @@ Source Location: (35:1,2 [59] TestFiles/IntegrationTests/CodeGenerationIntegrati
     var @class = "container-fluid";
     var @int = 1;
 |
-Generated Location: (2295:49,2 [59] )
+Generated Location: (2321:49,2 [59] )
 | 
     var @class = "container-fluid";
     var @int = 1;
@@ -16,51 +16,51 @@ Generated Location: (2295:49,2 [59] )
 
 Source Location: (122:6,23 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |1337|
-Generated Location: (2659:59,33 [4] )
+Generated Location: (2685:59,33 [4] )
 |1337|
 
 Source Location: (157:7,12 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |@class|
-Generated Location: (3026:68,12 [6] )
+Generated Location: (3052:68,12 [6] )
 |@class|
 
 Source Location: (171:7,26 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |42|
-Generated Location: (3245:75,33 [2] )
+Generated Location: (3271:75,33 [2] )
 |42|
 
 Source Location: (202:8,21 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |42 + @int|
-Generated Location: (3631:84,33 [9] )
+Generated Location: (3657:84,33 [9] )
 |42 + @int|
 
 Source Location: (241:9,22 [3] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |int|
-Generated Location: (4025:93,33 [3] )
+Generated Location: (4051:93,33 [3] )
 |int|
 
 Source Location: (274:10,22 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |(|
-Generated Location: (4413:102,33 [1] )
+Generated Location: (4439:102,33 [1] )
 |(|
 
 Source Location: (275:10,23 [4] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |@int|
-Generated Location: (4414:102,34 [4] )
+Generated Location: (4440:102,34 [4] )
 |@int|
 
 Source Location: (279:10,27 [1] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |)|
-Generated Location: (4418:102,38 [1] )
+Generated Location: (4444:102,38 [1] )
 |)|
 
 Source Location: (307:11,19 [6] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |@class|
-Generated Location: (4790:111,19 [6] )
+Generated Location: (4816:111,19 [6] )
 |@class|
 
 Source Location: (321:11,33 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml)
 |4 * @(@int + 2)|
-Generated Location: (5010:118,33 [15] )
+Generated Location: (5036:118,33 [15] )
 |4 * @(@int + 2)|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_Runtime.codegen.cs
index f61e73f3e37..9403c0aa521 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "5cd388817ab99fffd9510eac1fcdd90cdd85ca2fdd2eea07bb546d13df0501ec"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         private static readonly global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute __tagHelperAttribute_0 = new global::Microsoft.AspNetCore.Razor.TagHelpers.TagHelperAttribute("class", new global::Microsoft.AspNetCore.Html.HtmlString("test"), global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_Runtime.ir.txt
index 0df5432621b..205ae49b0ff 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/TransitionsInTagHelperAttributes_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_TransitionsInTagHelperAttributes - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             PreallocatedTagHelperHtmlAttributeValue -  - __tagHelperAttribute_0 - class - test - HtmlAttributeValueStyle.DoubleQuotes
             DefaultTagHelperRuntime - 
             FieldDeclaration -  - private - global::TestNamespace.PTagHelper - __TestNamespace_PTagHelper
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.codegen.cs
index 9ca1fc448e4..cc79a14e325 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -16,7 +16,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.ir.txt
index 77a00644652..a1e409f94ee 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (1:0,1 [20] ) - global::System
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
@@ -10,7 +10,7 @@
         UsingDirective - (226:6,1 [51] ) - global::Microsoft.AspNetCore.Mvc.ViewFeatures
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.mappings.txt
index 562ac5e6d14..2e3186e571b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_DesignTime.mappings.txt
@@ -1,19 +1,19 @@
 Source Location: (2:0,2 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode.cshtml)
 |
 |
-Generated Location: (1489:33,2 [2] )
+Generated Location: (1515:33,2 [2] )
 |
 |
 
 Source Location: (5:1,1 [9] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode.cshtml)
 |DateTime.|
-Generated Location: (1668:40,6 [9] )
+Generated Location: (1694:40,6 [9] )
 |DateTime.|
 
 Source Location: (14:1,10 [2] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode.cshtml)
 |
 |
-Generated Location: (1861:47,10 [2] )
+Generated Location: (1887:47,10 [2] )
 |
 |
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_Runtime.codegen.cs
index 3c252d76ce9..040c8d41b43 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "9e0927882a39a700cb088e5a915bfe7c1f8b99c1859555ad2263383bac549511"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System;
@@ -18,7 +18,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_Runtime.ir.txt
index e3000d9d916..c4fd3bfd7ac 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/UnfinishedExpressionInCode_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (1:0,1 [22] ) - global::System
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
@@ -11,7 +11,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_UnfinishedExpressionInCode - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 CSharpCode - (2:0,2 [2] UnfinishedExpressionInCode.cshtml)
                     LazyIntermediateToken - (2:0,2 [2] UnfinishedExpressionInCode.cshtml) - CSharp - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.codegen.cs
index b85b3188239..fb1f6c69ecb 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -45,7 +45,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.ir.txt
index 0cc9b7d0304..00c805a43fc 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [25] ) - global::System.Linq
@@ -15,7 +15,7 @@
         UsingDirective - (123:6,1 [41] Usings.cshtml) - static global::System.Text.Encoding
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.mappings.txt
index 49e5b4e7a7b..8fb5bc02ce6 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_DesignTime.mappings.txt
@@ -1,31 +1,31 @@
 Source Location: (1:0,1 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml)
 |using System.IO|
-Generated Location: (520:14,0 [15] )
+Generated Location: (537:14,0 [15] )
 |using System.IO|
 
 Source Location: (19:1,1 [32] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml)
 |using Foo = System.Text.Encoding|
-Generated Location: (660:19,0 [32] )
+Generated Location: (677:19,0 [32] )
 |using Foo = System.Text.Encoding|
 
 Source Location: (54:2,1 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml)
 |using System|
-Generated Location: (817:24,0 [12] )
+Generated Location: (834:24,0 [12] )
 |using System|
 
 Source Location: (71:4,1 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml)
 |using static System|
-Generated Location: (954:29,0 [19] )
+Generated Location: (971:29,0 [19] )
 |using static System|
 
 Source Location: (93:5,1 [27] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml)
 |using static System.Console|
-Generated Location: (1098:34,0 [27] )
+Generated Location: (1115:34,0 [27] )
 |using static System.Console|
 
 Source Location: (123:6,1 [41] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml)
 |using static global::System.Text.Encoding|
-Generated Location: (1250:39,0 [41] )
+Generated Location: (1267:39,0 [41] )
 |using static global::System.Text.Encoding|
 
 Source Location: (170:8,2 [158] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml)
@@ -33,7 +33,7 @@ Source Location: (170:8,2 [158] TestFiles/IntegrationTests/CodeGenerationIntegra
     using var disposable = (IDisposable)ViewData["disposable"];
     using System.IDisposable otherDisposable = (IDisposable)ViewData["otherdisposable"];
 |
-Generated Location: (2290:62,2 [158] )
+Generated Location: (2316:62,2 [158] )
 | 
     using var disposable = (IDisposable)ViewData["disposable"];
     using System.IDisposable otherDisposable = (IDisposable)ViewData["otherdisposable"];
@@ -41,11 +41,11 @@ Generated Location: (2290:62,2 [158] )
 
 Source Location: (362:13,29 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml)
 |typeof(Path).FullName|
-Generated Location: (2629:71,29 [21] )
+Generated Location: (2655:71,29 [21] )
 |typeof(Path).FullName|
 
 Source Location: (424:14,35 [20] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml)
 |typeof(Foo).FullName|
-Generated Location: (2840:78,35 [20] )
+Generated Location: (2866:78,35 [20] )
 |typeof(Foo).FullName|
 
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.codegen.cs
index 7e460943928..714f3fe5d77 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.codegen.cs
@@ -1,6 +1,6 @@
 // <auto-generated/>
 #pragma warning disable 1591
-namespace AspNetCore
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using TModel = global::System.Object;
@@ -50,7 +50,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 219
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.ir.txt
index da36f385ec9..44e536ca30a 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.ir.txt
@@ -1,5 +1,5 @@
 Document - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective -  - TModel = global::System.Object
         UsingDirective - (24:1,1 [40] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [25] ) - global::System.Linq
@@ -16,7 +16,7 @@
         UsingDirective - (576:31,1 [17] Usings_OutOfOrder.cshtml) - System.Text
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             DesignTimeDirective - 
                 DirectiveToken - (287:7,8 [62] ) - global::Microsoft.AspNetCore.Mvc.Rendering.IHtmlHelper<TModel>
                 DirectiveToken - (350:7,71 [4] ) - Html
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.mappings.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.mappings.txt
index 724da265177..9082f2f3e43 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.mappings.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_DesignTime.mappings.txt
@@ -1,36 +1,36 @@
 Source Location: (1:0,1 [15] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |using System.IO|
-Generated Location: (531:14,0 [15] )
+Generated Location: (548:14,0 [15] )
 |using System.IO|
 
 Source Location: (60:6,1 [32] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |using Foo = System.Text.Encoding|
-Generated Location: (682:19,0 [32] )
+Generated Location: (699:19,0 [32] )
 |using Foo = System.Text.Encoding|
 
 Source Location: (136:12,1 [12] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |using System|
-Generated Location: (851:24,0 [12] )
+Generated Location: (868:24,0 [12] )
 |using System|
 
 Source Location: (153:14,1 [19] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |using static System|
-Generated Location: (1000:29,0 [19] )
+Generated Location: (1017:29,0 [19] )
 |using static System|
 
 Source Location: (175:15,1 [27] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |using static System.Console|
-Generated Location: (1156:34,0 [27] )
+Generated Location: (1173:34,0 [27] )
 |using static System.Console|
 
 Source Location: (246:21,1 [41] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |using static global::System.Text.Encoding|
-Generated Location: (1320:39,0 [41] )
+Generated Location: (1337:39,0 [41] )
 |using static global::System.Text.Encoding|
 
 Source Location: (576:31,1 [17] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |using System.Text|
-Generated Location: (1498:44,0 [17] )
+Generated Location: (1515:44,0 [17] )
 |using System.Text|
 
 Source Location: (293:23,2 [158] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
@@ -38,7 +38,7 @@ Source Location: (293:23,2 [158] TestFiles/IntegrationTests/CodeGenerationIntegr
     using var disposable = (IDisposable)ViewData["disposable"];
     using System.IDisposable otherDisposable = (IDisposable)ViewData["otherdisposable"];
 |
-Generated Location: (2548:67,2 [158] )
+Generated Location: (2574:67,2 [158] )
 | 
     using var disposable = (IDisposable)ViewData["disposable"];
     using System.IDisposable otherDisposable = (IDisposable)ViewData["otherdisposable"];
@@ -46,19 +46,19 @@ Generated Location: (2548:67,2 [158] )
 
 Source Location: (485:28,29 [21] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |typeof(Path).FullName|
-Generated Location: (2898:76,29 [21] )
+Generated Location: (2924:76,29 [21] )
 |typeof(Path).FullName|
 
 Source Location: (547:29,35 [20] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |typeof(Foo).FullName|
-Generated Location: (3120:83,35 [20] )
+Generated Location: (3146:83,35 [20] )
 |typeof(Foo).FullName|
 
 Source Location: (32:2,12 [22] TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml)
 |
     // functions 1
 |
-Generated Location: (3366:92,12 [22] )
+Generated Location: (3392:92,12 [22] )
 |
     // functions 1
 |
@@ -67,7 +67,7 @@ Source Location: (108:8,12 [22] TestFiles/IntegrationTests/CodeGenerationIntegra
 |
     // functions 2
 |
-Generated Location: (3562:100,12 [22] )
+Generated Location: (3588:100,12 [22] )
 |
     // functions 2
 |
@@ -76,7 +76,7 @@ Source Location: (218:17,12 [22] TestFiles/IntegrationTests/CodeGenerationIntegr
 |
     // functions 3
 |
-Generated Location: (3759:108,12 [22] )
+Generated Location: (3785:108,12 [22] )
 |
     // functions 3
 |
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_Runtime.codegen.cs
index 89753dcb72d..582e12e504c 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "a3144fef15024ccbbb19682bfb110b149c637f2ae64b4499962195e7612ba274"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System.Collections.Generic;
@@ -59,7 +59,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_Runtime.ir.txt
index fd87db2bf1d..3d5b44cc8d4 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_OutOfOrder_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
         UsingDirective - (95:3,1 [38] ) - global::System.Threading.Tasks
@@ -17,7 +17,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings_OutOfOrder - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (18:1,0 [2] Usings_OutOfOrder.cshtml)
                     LazyIntermediateToken - (18:1,0 [2] Usings_OutOfOrder.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_Runtime.codegen.cs b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_Runtime.codegen.cs
index 7548535a8a6..11aba447b73 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_Runtime.codegen.cs
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_Runtime.codegen.cs
@@ -1,8 +1,8 @@
 #pragma checksum "TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml" "{8829d00f-11b8-4213-878b-770e8597ac16}" "f52e72ba69034334ab681d1f5e91cd50788cbfc0d1390104ee1e60d95d4ca443"
 // <auto-generated/>
 #pragma warning disable 1591
-[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCore.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml")]
-namespace AspNetCore
+[assembly: global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemAttribute(typeof(AspNetCoreGeneratedDocument.TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings), @"mvc.1.0.view", @"/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml")]
+namespace AspNetCoreGeneratedDocument
 {
     #line default
     using global::System.Collections.Generic;
@@ -53,7 +53,7 @@ namespace AspNetCore
     [global::Microsoft.AspNetCore.Razor.Hosting.RazorCompiledItemMetadataAttribute("Identifier", "/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings.cshtml")]
     [global::System.Runtime.CompilerServices.CreateNewOnMetadataUpdateAttribute]
     #nullable restore
-    public class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
+    internal sealed class TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings : global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic>
     #nullable disable
     {
         #pragma warning disable 1998
diff --git a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_Runtime.ir.txt b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_Runtime.ir.txt
index 1f87045e8c9..26b0208ef5b 100644
--- a/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_Runtime.ir.txt
+++ b/src/Compiler/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/CodeGenerationIntegrationTest/Usings_Runtime.ir.txt
@@ -1,6 +1,6 @@
 Document - 
     RazorCompiledItemAttribute - 
-    NamespaceDeclaration -  - AspNetCore
+    NamespaceDeclaration -  - AspNetCoreGeneratedDocument
         UsingDirective - (24:1,1 [42] ) - global::System.Collections.Generic
         UsingDirective - (67:2,1 [27] ) - global::System.Linq
         UsingDirective - (95:3,1 [38] ) - global::System.Threading.Tasks
@@ -16,7 +16,7 @@
         RazorSourceChecksumAttribute - 
         RazorCompiledItemMetadataAttribute - 
         CreateNewOnMetadataUpdateAttribute - 
-        ClassDeclaration -  - public - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
+        ClassDeclaration -  - internal sealed - TestFiles_IntegrationTests_CodeGenerationIntegrationTest_Usings - global::Microsoft.AspNetCore.Mvc.Razor.RazorPage<dynamic> - 
             MethodDeclaration -  - public async override - global::System.Threading.Tasks.Task - ExecuteAsync
                 HtmlContent - (68:3,0 [2] Usings.cshtml)
                     LazyIntermediateToken - (68:3,0 [2] Usings.cshtml) - Html - \n
diff --git a/src/Compiler/Microsoft.CodeAnalysis.Razor.Compiler/src/Language/RazorConfiguration.cs b/src/Compiler/Microsoft.CodeAnalysis.Razor.Compiler/src/Language/RazorConfiguration.cs
index 33f6e744b0e..a1b1ba4b487 100644
--- a/src/Compiler/Microsoft.CodeAnalysis.Razor.Compiler/src/Language/RazorConfiguration.cs
+++ b/src/Compiler/Microsoft.CodeAnalysis.Razor.Compiler/src/Language/RazorConfiguration.cs
@@ -12,14 +12,14 @@ public sealed record class RazorConfiguration(
     string ConfigurationName,
     ImmutableArray<RazorExtension> Extensions,
     LanguageServerFlags? LanguageServerFlags = null,
-    bool UseConsolidatedMvcViews = false)
+    bool UseConsolidatedMvcViews = true)
 {
     public static readonly RazorConfiguration Default = new(
         RazorLanguageVersion.Latest,
         ConfigurationName: "unnamed",
         Extensions: [],
         LanguageServerFlags: null,
-        UseConsolidatedMvcViews: false);
+        UseConsolidatedMvcViews: true);
 
     public bool Equals(RazorConfiguration? other)
         => other is not null &&
diff --git a/src/Razor/test/Microsoft.AspNetCore.Razor.LanguageServer.Test/DocumentSymbols/DocumentSymbolEndpointTest.cs b/src/Razor/test/Microsoft.AspNetCore.Razor.LanguageServer.Test/DocumentSymbols/DocumentSymbolEndpointTest.cs
index aa245a725be..0925b7d4aeb 100644
--- a/src/Razor/test/Microsoft.AspNetCore.Razor.LanguageServer.Test/DocumentSymbols/DocumentSymbolEndpointTest.cs
+++ b/src/Razor/test/Microsoft.AspNetCore.Razor.LanguageServer.Test/DocumentSymbols/DocumentSymbolEndpointTest.cs
@@ -25,7 +25,7 @@ public Task DocumentSymbols_CSharpClassWithMethods(bool hierarchical)
         => VerifyDocumentSymbolsAsync(
             """
             @functions {
-                class {|AspNetCore.test.C:C|}
+                class {|AspNetCoreGeneratedDocument.test.C:C|}
                 {
                     private void {|HandleString(string s):HandleString|}(string s)
                     {