unsubscribe method
void
unsubscribe()
If you need to unsubscribe
channel.unsubscribe();
Implementation
void unsubscribe() {
CallbacksStore.subscribed.remove(identifier);
CallbacksStore.diconnected.remove(identifier);
CallbacksStore.message.remove(identifier);
final command = {'identifier': identifier, 'command': 'unsubscribe'};
_sendMessageCallback(command);
}