code: def set_follow_object(self, key, enable):
          '''set follow on/off on an object'''
          self.object_queue.put(SlipFollowObject(key, enable)f set_follow_object(self, key, enable):
          '''set follow on/off on an object'''
          self.object_queue.put(SlipFollowObject(key, enable))
docs: set follow on/off on an object