code: def complete_session_endpoint(self, cmd_param_text, full_cmd, *rest):
          
          complete_hosts = partial(complete_values, ["127.0.0.1:2181"])
          completers = [self._complete_path, complete_hosts, complete_labeled_boolean("reverse")]
          return complete(completers, cmd_param_text, full_cmd, *rest)
docs: TODO: the hosts lists can be retrieved from self.zk.hosts