private void AddAfter(Element element, string after)
{
if (_map.ContainsKey(after))
{
throw DuplicateElementIdException.Create(after);
}
_map.Add(after, element);
}
private void PreventDuplicateIds(IEnumerable <Node> list)
{
var document = _parent.Document;
var hash = new HashSet <string>();
foreach (var node in list)
{
if (!(node is Element element) || string.IsNullOrEmpty(element.Id))
{
continue;
}
var id = element.Id;
if (hash.Contains(id) || DuplicateIdInDocument(document, id))
{
throw DuplicateElementIdException.Create(id);
}
hash.Add(id);
}
}