'IPackage' does not contain a definition for 'Version' and no accessible extension method 'Version' accepting a first argument of type 'IPackage' could be found (are you missing a using directive or an assembly reference?)

'IPackage' does not contain a definition for 'Version' and no accessible extension method 'Version' accepting a first argument of type 'IPackage' could be found (are you missing a using directive or an assembly reference?)

Process completed with exit code 1.

Exception type System.Exception is not sufficiently specific (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca2201)

Non-nullable property 'InterfaceType' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'ProjectedClassType' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Clsids' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Possible null reference return.

Member 'SlowMethod2' does not access instance data and can be marked as static (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1822)

Member 'SlowMethod3' does not access instance data and can be marked as static (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1822)

Type 'TestClass' can be sealed because it has no subtypes in its containing assembly and is not externally visible (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1852)

Avoid multiple blank lines (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/style-rules/ide2000)