code: def enter_unlink_mode(self):
          
          self.logger.info("enter_unlink_mode Group %s", self.group_id)
          self.scene_command('0A')
          # should send http://0.0.0.0/0?0A01=I=0
  
          ## TODO check return status
          status = self.hub.get_buffer_status()
          return status
docs: Enter unlinking mode for a group