code: def stop(self):
          
          # check that everything is running
          if not self._running:
              logging.warning('Kinect not running. Aborting stop')
              return False
  
          # stop subs
          self._image_sub.unregister()
          self._depth_sub.unregister()
          self._camera_info_sub.unregister
  
          self._running = False
          return True
docs: Stop the sensor