code: def build_standalone(self, computing_session):
      from fate.arch.federation.backends.standalone import (
          StandaloneFederation,
      )
  
      return StandaloneFederation(
          standalone_session=computing_session,
          federation_session_id=self._federation_id,
          party=self._party,
          parties=self._parties,
      )
  
file_path: FATE/python/fate/arch/federation/_builder.py
imports: import typing
  from enum import Enum
  from fate.arch.federation.api import PartyMeta
  from fate.arch.config import cfg
label_desc: Use image node_id 3 for calling the FederationBuilder obj's underlying member method code with example usage: obj.build_standalone(computing_session) and returns: StandaloneFederation