dispose method
override
Releases this controller's resources. Some of this has to be done async but listeners will receive no more notifications after this method has been called.
Implementation
@override
void dispose() {
_wasDisposed = true;
unawaited(
_lock.synchronized(() async {
await _trackUpdateSubscription?.cancel();
await _renderer?.let((renderer) async => (await PlatformBridge.instance).disposeTextureRenderer(renderer));
super.dispose();
}),
);
}