These changes seem ok

Author: GrahamTheCoder

Tests/CSharp/ExpressionTests/StringExpressionTests.cs

@@ -504,6 +504,7 @@ Public Sub TestEnumConcat()
     End Sub
 End Class",
             @"using System;
+using System.IO;
 
 public partial class EnumTests
 {

Tests/CSharp/MemberTests/MemberTests.cs

@@ -786,7 +786,8 @@ public async Task FieldWithInstanceOperationOfDifferingTypeAsync()
     {
         await TestConversionVisualBasicToCSharpAsync(@"Public Class DoesNotNeedConstructor
     Private ReadOnly ClassVariable1 As New ParallelOptions With {.MaxDegreeOfParallelism = 5}
-End Class", @"
+End Class", @"using System.Threading.Tasks;
+
 public partial class DoesNotNeedConstructor
 {
     private readonly ParallelOptions ClassVariable1 = new ParallelOptions() { MaxDegreeOfParallelism = 5 };

Tests/CSharp/TriviaTests.cs

@@ -377,7 +377,8 @@ End Sub
     Private ReadOnly ClassVariable1 As New ParallelOptions With {.MaxDegreeOfParallelism = x}
 #End Region
 End Class
-", @"
+", @"using System.Threading.Tasks;
+
 public partial class ConversionTest8
 {
     private int x = 5;

Tests/CSharp/TypeCastTests.cs

@@ -1535,7 +1535,8 @@ End Function
     Private Shared Function GenericFunctionWithCastThatExistsInCsharp(Of T As {TestGenericCast})() As T
         Return New TestGenericCast
     End Function
-End Class", @"
+End Class", @"using Microsoft.VisualBasic.CompilerServices; // Install-Package Microsoft.VisualBasic
+
 internal partial class TestGenericCast
 {
     private static T GenericFunctionWithCTypeCast<T>()
@@ -1552,7 +1553,7 @@ private static T GenericFunctionWithCast<T>()
     }
     private static T GenericFunctionWithCastThatExistsInCsharp<T>() where T : TestGenericCast
     {
-        return (T)new TestGenericCast();
+        return Conversions.ToGenericParameter<T>(new TestGenericCast());
     }
 }");
     }