insertBefore method

@override void insertBefore(Node entry)

Insert an element before this element in this element's linked list.

This entry must be in a linked list when this method is called. The entry must not be in a linked list.

Implementation

@override
void insertBefore(Node entry) {
  assert(entry._parent == null && _parent != null);
  entry._parent = _parent;
  super.insertBefore(entry);
}