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.GetContainingVariableDeclaratorOfFieldDeclaration(parameterNode));
}