private SyntaxNode GetContainer(SemanticModel semanticModel, SyntaxNode parameterNode, ISyntaxFactsService syntaxFactsService) { for (var current = parameterNode; current != null; current = current.Parent) { var declaredSymbol = semanticModel.GetDeclaredSymbol(current); if (declaredSymbol is IMethodSymbol && ((IMethodSymbol)declaredSymbol).MethodKind != MethodKind.AnonymousFunction) { return(current); } } return(syntaxFactsService.GetContainingVariableDeclarationOfFieldDeclaration(parameterNode)); }