dispose method
void
dispose()
Call this method to dispose this object.
Implementation
void dispose() {
_debouncedUpdatePersistenceChannelState.cancel();
_retryQueue.dispose();
_subscriptions.cancel();
_channelStateController.close();
_isUpToDateController.close();
_threadsController.close();
_staleTypingEventsCleanerTimer?.cancel();
_stalePinnedMessagesCleanerTimer?.cancel();
_typingEventsController.close();
}