dispose method

@override void dispose()

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

Implementation

@override
void dispose() {
  // dispose change token registrations
  for (var registration in _changeTokenRegistrations!) {
    registration.dispose();
  }

  // dispose providers
  for (var provider in _providers) {
    if (provider is Disposable) {
      (provider as Disposable).dispose();
    }
  }
}