onRemoving method

@override void onRemoving()

Callback used to notify a node that it is about to be removed.

Implementation

@override
void onRemoving() {
  if (timer != null) {
    timer?.dispose();
  }

  storeBuffer();

  while (onRemoveCallbacks.isNotEmpty) {
    onRemoveCallbacks.removeAt(0)();
  }
}