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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 disconnect(self):
 """ Disconnects from the MQTT server """

        # Stop the timer
        self.__stop_timer()

        # Unlock all publishers
        for event in self.__in_flight.values():
            event.set()

        # Disconnect from the server
        self.__mqtt.disconnect()

        # Stop the MQTT loop thread
        # Use a thread to avoid a dead lock in Paho
        thread = threading.Thread(target=self.__mqtt.loop_stop)
        thread.daemon = True
        thread.start()

        # Give it some time
        thread.join(4)