clear method
void
clear()
override
Clear all the child nodes from children. The children will be empty after this operation.
The ValueListenable and removedNodes listeners will also be notified on this operation
Implementation
void clear() {
final clearedNodes = childrenAsList;
super.clear();
_notifyListeners();
_notifyNodesRemoved(NodeRemoveEvent(List.from(clearedNodes)));
}