dispose method
void
dispose()
Implementation
void dispose() async {
if (isCreated == false) return;
isCreated = false;
progressCallbacks.clear();
focalCallbacks.clear();
// if (_subscription != null) _subscription.cancel();
AppDart().rmvListener(progressListener);
await app_player_channel.invokeMethod("app_player_stop", this.textureId);
await app_player_channel.invokeMethod("app_player_destroy", this.textureId);
}