/// <summary>
 /// Do timeout or cancel cleanup
 /// </summary>
 private void DoCleanup()
 {
     _misty.Stop(null);
     _misty.StopKeyPhraseRecognition(null);
     _misty.StopFaceRecognition(null);
     // Unregisters all events
     _misty.UnregisterAllEvents(UnregisterCallback);
     _misty.DisplayImage("e_DefaultContent.jpg", 1, null);
 }
 /// <summary>
 /// Performs some cleanup on the state of the robot
 /// </summary>
 private void DoCleanup()
 {
     _misty?.StopKeyPhraseRecognition(null);
     _misty?.StopFaceRecognition(null);
 }