diff --git a/AzooKeyCore/Sources/KeyboardViews/View/CustomKeybaord/SimpleKeyView/SimpleKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/CustomKeybaord/SimpleKeyView/SimpleKeyModel.swift
index 3ade17fd..3c164299 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/CustomKeybaord/SimpleKeyView/SimpleKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/CustomKeybaord/SimpleKeyView/SimpleKeyModel.swift
@@ -82,7 +82,7 @@ struct SimpleKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>: Simp
     private let pressActions: [ActionType]
     let longPressActions: LongpressActionType
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<E> {
         KeyLabel(self.keyLabelType, width: width)
     }
 
@@ -108,7 +108,7 @@ struct SimpleEnterKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>:
 
     let longPressActions: LongpressActionType = .none
     let unpressedKeyColorType: SimpleUnpressedKeyColorType = .enter
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<E> {
         let text = Design.language.getEnterKeyText(states.enterKeyState)
         return KeyLabel(.text(text), width: width)
     }
@@ -134,7 +134,7 @@ struct SimpleChangeKeyboardKeyModel<Extension: ApplicationSpecificKeyboardViewEx
     let unpressedKeyColorType: SimpleUnpressedKeyColorType = .special
     let longPressActions: LongpressActionType = .none
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<E> {
         if SemiStaticStates.shared.needsInputModeSwitchKey {
             return KeyLabel(.changeKeyboard, width: width)
         } else {
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickAaKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickAaKeyModel.swift
index 94a7d7da..8ded3816 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickAaKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickAaKeyModel.swift
@@ -37,7 +37,7 @@ struct FlickAaKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>: Fli
         }
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<E> {
         if states.boolStates.isCapsLocked {
             return KeyLabel(.image("capslock.fill"), width: width)
         } else {
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickChangeKeyboardKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickChangeKeyboardKeyModel.swift
index 8c2a694e..255af3b7 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickChangeKeyboardKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickChangeKeyboardKeyModel.swift
@@ -43,7 +43,7 @@ struct FlickChangeKeyboardModel<Extension: ApplicationSpecificKeyboardViewExtens
         return [:]
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<E> {
         switch SemiStaticStates.shared.needsInputModeSwitchKey {
         case true:
             return KeyLabel(.changeKeyboard, width: width)
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickEnterKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickEnterKeyModel.swift
index 44082bc1..98b9a304 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickEnterKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickEnterKeyModel.swift
@@ -30,7 +30,7 @@ struct FlickEnterKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>:
         [:]
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<E> {
         let text = Design.language.getEnterKeyText(states.enterKeyState)
         return KeyLabel(.text(text), width: width)
     }
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKanaSymbolsKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKanaSymbolsKeyModel.swift
index 59ca0069..78f6e31a 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKanaSymbolsKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKanaSymbolsKeyModel.swift
@@ -33,7 +33,7 @@ struct FlickKanaSymbolsKeyModel<Extension: ApplicationSpecificKeyboardViewExtens
 
     private init() {}
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<E> {
         KeyLabel(self.labelType, width: width)
     }
 
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKeyModel.swift
index 3157b215..b5530cde 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKeyModel.swift
@@ -49,7 +49,7 @@ struct FlickKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>: Flick
         self.flickKeys
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<E> {
         KeyLabel(self.labelType, width: width)
     }
 
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKogakiKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKogakiKeyModel.swift
index 452611cf..ebb697d0 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKogakiKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickKogakiKeyModel.swift
@@ -33,7 +33,7 @@ struct FlickKogakiKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>:
         [.changeCharacterType]
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<E> {
         KeyLabel(self.labelType, width: width)
     }
 
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickSpaceKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickSpaceKeyModel.swift
index e13e1e74..02847458 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickSpaceKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickSpaceKeyModel.swift
@@ -41,7 +41,7 @@ struct FlickSpaceKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>:
         [.input(" ")]
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<E> {
         KeyLabel(.text("空白"), width: width)
     }
 
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickTabKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickTabKeyModel.swift
index 0278175c..668d2fa1 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickTabKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/FlickKeyboard/KeyView/FlickTabKeyModel.swift
@@ -37,7 +37,7 @@ struct FlickTabKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>: Fl
         self.tab = tab
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates) -> KeyLabel<E> {
         KeyLabel(self.data.labelType, width: width)
     }
 
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyAaKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyAaKeyModel.swift
index cfbeab90..86efda10 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyAaKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyAaKeyModel.swift
@@ -28,7 +28,7 @@ struct QwertyAaKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>: Qw
         .init(start: [.setBoolState(VariableStates.BoolStates.isCapsLockedKey, .toggle)])
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<E> {
         if states.boolStates.isCapsLocked {
             return KeyLabel(.image("capslock.fill"), width: width, textColor: color)
         } else {
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyChangeKeyboardKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyChangeKeyboardKeyModel.swift
index 673507e1..92139067 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyChangeKeyboardKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyChangeKeyboardKeyModel.swift
@@ -66,7 +66,7 @@ struct QwertyChangeKeyboardKeyModel<Extension: ApplicationSpecificKeyboardViewEx
         self.fallBackType = fallBackType
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<E> {
         if SemiStaticStates.shared.needsInputModeSwitchKey {
             return KeyLabel(.changeKeyboard, width: width, textColor: color)
         }
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyEnterKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyEnterKeyModel.swift
index 50faca4e..98fe9dbd 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyEnterKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyEnterKeyModel.swift
@@ -32,7 +32,7 @@ struct QwertyEnterKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>:
 
     let longPressActions: LongpressActionType = .none
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<E> {
         let text = Design.language.getEnterKeyText(states.enterKeyState)
         return KeyLabel(.text(text), width: width, textSize: .small, textColor: color)
     }
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyFunctionalKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyFunctionalKeyModel.swift
index fecb568a..357c6ed9 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyFunctionalKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyFunctionalKeyModel.swift
@@ -34,7 +34,7 @@ struct QwertyFunctionalKeyModel<Extension: ApplicationSpecificKeyboardViewExtens
         self.pressActions
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<E> {
         KeyLabel(self.labelType, width: width, textColor: color)
     }
 
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyKeyModel.swift
index 683598ab..a7a0048f 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyKeyModel.swift
@@ -31,7 +31,7 @@ struct QwertyKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>: Qwer
         self.unpressedKeyColorType = keyColorType
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<E> {
         if (states.boolStates.isCapsLocked || states.boolStates.isShifted), states.keyboardLanguage == .en_US, case let .text(text) = self.labelType {
             return KeyLabel(.text(text.uppercased()), width: width, textColor: color)
         }
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyLanguageSwitchKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyLanguageSwitchKeyModel.swift
index 447d64a6..41550099 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyLanguageSwitchKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyLanguageSwitchKeyModel.swift
@@ -53,7 +53,7 @@ struct QwertySwitchLanguageKeyModel<Extension: ApplicationSpecificKeyboardViewEx
         self.languages = languages
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<E> {
         let current = currentTabLanguage(variableStates: states)
         if languages.0 == current {
             return KeyLabel(.selectable(languages.0.symbol, languages.1.symbol), width: width, textColor: color)
@@ -62,7 +62,7 @@ struct QwertySwitchLanguageKeyModel<Extension: ApplicationSpecificKeyboardViewEx
         } else if SemiStaticStates.shared.needsInputModeSwitchKey {
             return KeyLabel(.text(states.keyboardLanguage.symbol), width: width, textColor: color)
         } else {
-            return KeyLabel(.text(Extension.SettingProvider.preferredLanguage.first.symbol), width: width, textColor: color)
+            return KeyLabel(.text(E.SettingProvider.preferredLanguage.first.symbol), width: width, textColor: color)
         }
     }
 
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyShiftKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyShiftKeyModel.swift
index 9c53d8c2..49c1b595 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyShiftKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyShiftKeyModel.swift
@@ -37,7 +37,7 @@ struct QwertyShiftKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>:
         }
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<E> {
         if states.boolStates.isCapsLocked {
             return KeyLabel(.image("capslock.fill"), width: width, textColor: color)
         } else if states.boolStates.isShifted {
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertySpaceKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertySpaceKeyModel.swift
index e02b5140..8c97f4f7 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertySpaceKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertySpaceKeyModel.swift
@@ -19,7 +19,7 @@ struct QwertySpaceKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>:
 
     init() {}
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<E> {
         switch states.keyboardLanguage {
         case .el_GR:
             return KeyLabel(.text("διάστημα"), width: width, textSize: .small, textColor: color)
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyTabKeyModel.swift b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyTabKeyModel.swift
index 48be6a4e..969114b9 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyTabKeyModel.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/QwertyKeyboard/KeyView/QwertyTabKeyModel.swift
@@ -39,7 +39,7 @@ struct QwertyTabKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>: Q
         self.keySizeType = .functional(normal: rowInfo.normal, functional: rowInfo.functional, enter: rowInfo.enter, space: rowInfo.space)
     }
 
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, color: Color?) -> KeyLabel<E> {
         switch SemiStaticStates.shared.needsInputModeSwitchKey {
         case true:
             switch states.keyboardLanguage {
diff --git a/AzooKeyCore/Sources/KeyboardViews/View/SpecialTabs/EmojiTab.swift b/AzooKeyCore/Sources/KeyboardViews/View/SpecialTabs/EmojiTab.swift
index d0af3089..fae49311 100644
--- a/AzooKeyCore/Sources/KeyboardViews/View/SpecialTabs/EmojiTab.swift
+++ b/AzooKeyCore/Sources/KeyboardViews/View/SpecialTabs/EmojiTab.swift
@@ -368,7 +368,7 @@ struct EmojiTab<Extension: ApplicationSpecificKeyboardViewExtension>: View {
 private struct ExpandKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>: SimpleKeyModelProtocol {
     private var currentLevel: EmojiTabExpandModePreference.Level
     private var action: () -> Void
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<E> {
         KeyLabel(.image(self.currentLevel.icon), width: width, textSize: .max)
     }
 
@@ -393,7 +393,7 @@ private struct ExpandKeyModel<Extension: ApplicationSpecificKeyboardViewExtensio
 private struct GenreKeyModel<Extension: ApplicationSpecificKeyboardViewExtension>: SimpleKeyModelProtocol {
     private var action: () -> Void
     private var systemImage: String
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states: VariableStates, theme: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<E> {
         KeyLabel(.image(systemImage), width: width, textSize: .max)
     }
 
@@ -430,7 +430,7 @@ private struct EmojiKeyModel<Extension: ApplicationSpecificKeyboardViewExtension
     var longPressActions: LongpressActionType {
         .none
     }
-    func label<Extension: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states _: VariableStates, theme _: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<Extension> {
+    func label<E: ApplicationSpecificKeyboardViewExtension>(width: CGFloat, states _: VariableStates, theme _: ThemeData<some ApplicationSpecificTheme>) -> KeyLabel<E> {
         KeyLabel(.text(emoji), width: width, textSize: .max)
     }