fix #655 - Missing generic parameter in vb lang

NRefactory.VB/ICSharpCode.NRefactory.VB/OutputVisitor/OutputVisitor.cs

@@ -244,6 +244,7 @@ namespace ICSharpCode.NRefactory.VB
 			WriteModifiers(typeDeclaration.ModifierTokens);
 			WriteClassTypeKeyword(typeDeclaration);
 			WriteIdentifier(typeDeclaration.Name.Name);
+			WriteTypeParameters(typeDeclaration.TypeParameters);
 			MarkFoldStart();
 			NewLine();
 			

NRefactory.VB/ICSharpCode.NRefactory.VB/Visitors/CSharpToVBConverterVisitor.cs

@@ -904,6 +904,7 @@ namespace ICSharpCode.NRefactory.VB.Visitors
 				
 				ConvertNodes(typeDeclaration.Attributes, type.Attributes);
 				ConvertNodes(typeDeclaration.ModifierTokens, type.ModifierTokens);
+				ConvertNodes(typeDeclaration.TypeParameters, type.TypeParameters);
 				
 				if (typeDeclaration.BaseTypes.Any()) {
 					var first = typeDeclaration.BaseTypes.First();