code: def unplug(self):
          '''Remove the actor's methods from the callback registry.'''
          if not self.__plugged:
              return
          members = set([method for _, method
                        in inspect.getmembers(self, predicate=inspect.ismethod)])
          for message in global_callbacks:
              global_callbacks[message] -= members
          self.__plugged = Falsf unplug(self):
          '''Remove the actor's methods from the callback registry.'''
          if not self.__plugged:
              return
          members = set([method for _, method
                        in inspect.getmembers(self, predicate=inspect.ismethod)])
          for message in global_callbacks:
              global_callbacks[message] -= members
          self.__plugged = False
docs: Remove the actor's methods from the callback registry.