Move code down

src/Features/CSharp/Portable/PopulateSwitch/CSharpPopulateSwitchExpressionCodeFixProvider.cs

@@ -29,9 +29,6 @@ public CSharpPopulateSwitchExpressionCodeFixProvider()
         {
         }
 
-        protected override ICollection<ISymbol> GetMissingEnumMembers(ISwitchExpressionOperation switchOperation)
-            => PopulateSwitchExpressionHelpers.GetMissingEnumMembers(switchOperation);
-
         protected override SwitchExpressionArmSyntax CreateDefaulSwitchArm(SyntaxGenerator generator, Compilation compilation)
             => SwitchExpressionArm(DiscardPattern(), Exception(generator, compilation));
 

src/Features/Core/Portable/PopulateSwitch/AbstractPopulateSwitchExpressionCodeFixProvider.cs

@@ -42,7 +42,7 @@ protected AbstractPopulateSwitchExpressionCodeFixProvider()
         protected sealed override ITypeSymbol GetSwitchType(ISwitchExpressionOperation switchExpression)
             => switchExpression.Value.Type;
 
-        protected override ICollection<ISymbol> GetMissingEnumMembers(ISwitchExpressionOperation switchOperation)
+        protected sealed override ICollection<ISymbol> GetMissingEnumMembers(ISwitchExpressionOperation switchOperation)
             => PopulateSwitchExpressionHelpers.GetMissingEnumMembers(switchOperation);
 
         protected static TExpressionSyntax Exception(SyntaxGenerator generator, Compilation compilation)