protected void FilterType(TypeSyntax syntax) { if (syntax.IsKind(SyntaxKind.PredefinedType)) { var symbolInfo = SemanticModel.GetSymbolInfo(syntax); if ((symbolInfo.Symbol != null) && (symbolInfo.Symbol.Kind == SymbolKind.NamedType)) { var symbol = (ITypeSymbol)symbolInfo.Symbol; FilterTypeSymbol(symbol); } } }