dispose method

  1. @mustCallSuper
void dispose()
inherited

Discards the listener callbacks. After this method is called, the notifier object is no longer in a usable state and should be discarded (calls to addListener and removeListener will throw after the object is disposed).

This method should only be called by the object's owner.

Implementation

@mustCallSuper
void dispose() {
  assert(_debugAssertNotDisposed());
  _indexListeners = null;
  _listeners = null;
}