unsubscribeChatRoom method
Implementation
void unsubscribeChatRoom(QChatRoom room) {
_doOnConnected(() {
var roomId = room.id.toString();
mqttUnsubscribeTopic(TopicBuilder.messageRead(roomId))
.call(mqttUnsubscribeTopic(TopicBuilder.messageDelivered(roomId))
.call(mqttUnsubscribeTopic(TopicBuilder.typing(roomId, '+'))))
.run(_mqtt)
.run();
}).ignore();
}