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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def stop(self):
 """ The client stop method. If the client is currently connected stop the thread and disconnect. Publish the disconnected message if clean shutdown. """

        # self.loop.call_soon_threadsafe(self.loop.stop)
        # self.loop.stop()
        # self._longPoll.cancel()
        # self._shortPoll.cancel()
        if self.connected:
            LOGGER.info('Disconnecting from MQTT... {}:{}'.format(self._server, self._port))
            self._mqttc.publish(self.topicSelfConnection, json.dumps({'node': self.profileNum, 'connected': False}), retain=True)
            self._mqttc.loop_stop()
            self._mqttc.disconnect()
        try:
            for watcher in self.__stopObservers:
                watcher()
        except KeyError as e:
            LOGGER.exception('KeyError in gotConfig: {}'.format(e), exc_info=True)