detach method

  1. @mustCallSuper
void detach()

Mark this node as detached.

Typically called only from the parent's detach, and by the owner to mark the root of a tree as detached.

Subclasses with children should override this method to detach all their children after calling the inherited method, as in super.detach().

Implementation

@mustCallSuper
void detach() {
  assert(_owner != null);
  _owner = null;
  assert(parent == null || attached == parent!.attached);
}