code: def _maybe_create_topic_and_replication(self, party, topic_suffix):
      LOGGER.debug(
          f"_maybe_create_topic_and_replication, party={party}, topic_suffix={topic_suffix}"
      )
      send_topic_name = f"{self._session_id}-{self._party.role}-{self._party.party_id}-{party.role}-{party.party_id}-{topic_suffix}"
      receive_topic_name = f"{self._session_id}-{party.role}-{party.party_id}-{self._party.role}-{self._party.party_id}-{topic_suffix}"
  
      # topic_pair is a pair of topic for sending and receiving message respectively
      topic_pair = _TopicPair(
          namespace=self._session_id,
          send=send_topic_name,
          receive=receive_topic_name,
      )
      return topic_pair
  
imports: import json
  import typing
  from logging import getLogger
  from fate.arch.federation.api import PartyMeta
  from fate.arch.federation.backends.osx import osx_pb2
  from fate.arch.federation.message_queue import MessageQueueBasedFederation
  from ._mq_channel import MQChannel
label_desc: Use image node_id 5 for calling the OSXFederation obj's underlying member method code with example usage: obj._maybe_create_topic_and_replication(party, topic_suffix) and returns: topic_pair