code: def get_actor(self, aid, check_monitor=True):
          '''Given an actor unique id return the actor proxy.
          '''
          aid = actor_identity(aid)
          return self._concurrency.get_actor(self, aid,
                                             check_monitor=check_monitorf get_actor(self, aid, check_monitor=True):
          '''Given an actor unique id return the actor proxy.
          '''
          aid = actor_identity(aid)
          return self._concurrency.get_actor(self, aid,
                                             check_monitor=check_monitor)
docs: Given an actor unique id return the actor proxy.