code: def get_external_addresses(
      cls, address: str, n_process: int = None, ports: List[int] = None
  ):
      if "://" in address:
          address = address.split("://", 1)[1]
      return super().get_external_addresses(
          address, n_process=n_process, ports=ports
      )
  
file_path: mars/mars/oscar/backends/test/pool.py
imports: import asyncio
  import multiprocessing
  from typing import List, Dict
  from ..config import ActorPoolConfig
  from ..communication import gen_local_address, DummyServer
  from ..mars.pool import MainActorPool, SubActorPool, SubpoolStatus
  from ..pool import ActorPoolType
label_desc: Use image node_id 1 for calling the TestMainActorPool obj's underlying member method code with example usage: obj.get_external_addresses(cls, address, n_process, ports) and returns: super