public bool Visit(ElementNode element, object parameter)
        {
            if (element.HasAttribute("id"))
            {
                var list = (HashSet<string>)parameter;
                list.Add(element.GetAttribute("id").Value);
            }

            return true;
        }
		public bool HasSuggestedActions(ITextView textView, ITextBuffer textBuffer, int caretPosition, ElementNode element, AttributeNode attribute, HtmlPositionType positionType)
		{
			return element.HasAttribute("ng-controller") || element.HasAttribute("data-ng-controller");
        }