question: public void disconnectFromBroker ( final MqttAsyncConnection connection ) { try { connection . disconnect ( new MqttDisconnectionResultHandler ( ) ) ; } catch ( SpyException e ) { Platform . runLater ( new MqttEventHandler ( new MqttDisconnectionAttemptFailureEvent ( connection , e ) ) ) ; logger . error ( e . getMessage ( ) , e ) ; } }
target:  Disconnects the specified connection from the broker.