code: def session_id(self) -> str:
      return self._session_id
  
imports: import json
  import logging
  import sys
  import typing
  from typing import List
  from fate.arch.computing.api import KVTableContext
  from fate.arch.federation.api import Federation, PartyMeta, TableMeta
  from ._datastream import Datastream
  from ._parties import Party
label_desc: Use image node_id 12 for calling the MessageQueueBasedFederation obj's underlying member method code with example usage: obj.session_id() and returns: self