Insist on VisualBasicSyntaxNode

Author: GrahamTheCoder

CodeConverter/CSharp/BuiltInVisualBasicOperatorSubstitutions.cs

@@ -17,6 +17,7 @@
 using System.Linq.Expressions;
 using System.Threading.Tasks;
 using Microsoft.CodeAnalysis.Operations;
+using Microsoft.CodeAnalysis.VisualBasic;
 
 namespace ICSharpCode.CodeConverter.CSharp
 {
@@ -104,8 +105,8 @@ private async Task<ExpressionSyntax> ConvertMyGroupCollectionPropertyGetWithUnde
                         return await ConvertMyGroupCollectionPropertyGetWithUnderlyingFieldAsync(co.Operand.Syntax);
                     case IPropertyReferenceOperation pro when pro.Property.IsMyGroupCollectionProperty():
                         var associatedField = pro.Property.GetAssociatedField();
-                        var propertyReferenceOperation = ((IPropertyReferenceOperation)pro.Instance);
-                        var qualification = await propertyReferenceOperation.Syntax.AcceptAsync<ExpressionSyntax>(_triviaConvertingVisitor);
+                        var propertyReferenceSyntax = (VisualBasicSyntaxNode)((IPropertyReferenceOperation)pro.Instance).Syntax;
+                        var qualification = await propertyReferenceSyntax.AcceptAsync<ExpressionSyntax>(_triviaConvertingVisitor);
                         return SyntaxFactory.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, qualification, SyntaxFactory.IdentifierName(associatedField.Name));
                     default:
                         return null;

CodeConverter/CSharp/SyntaxNodeVisitorExtensions.cs

@@ -9,7 +9,7 @@ namespace ICSharpCode.CodeConverter.CSharp
     internal static class SyntaxNodeVisitorExtensions
     {
         /// <summary>For TOut, specify the most general type acceptable by the calling code (often ExpressionSyntax), this allows error information to be attached to a dummy return node.</summary>
-        public static async Task<TOut> AcceptAsync<TOut>(this SyntaxNode node, CommentConvertingVisitorWrapper visitorWrapper, SourceTriviaMapKind sourceTriviaMap = SourceTriviaMapKind.All) where TOut : CSharpSyntaxNode =>
+        public static async Task<TOut> AcceptAsync<TOut>(this VisualBasicSyntaxNode node, CommentConvertingVisitorWrapper visitorWrapper, SourceTriviaMapKind sourceTriviaMap = SourceTriviaMapKind.All) where TOut : CSharpSyntaxNode =>
             node == null ? null : await visitorWrapper.AcceptAsync<TOut>(node, sourceTriviaMap);
         public static async Task<SeparatedSyntaxList<TOut>> AcceptSeparatedListAsync<TIn, TOut>(this SeparatedSyntaxList<TIn> nodes, CommentConvertingVisitorWrapper visitorWrapper, SourceTriviaMapKind sourceTriviaMap = SourceTriviaMapKind.All) where TIn : VisualBasicSyntaxNode where TOut : CSharpSyntaxNode =>
             await visitorWrapper.AcceptAsync<TIn, TOut>(nodes, sourceTriviaMap);