code: def add_worker_meta_store(self, ref: mo.ActorRef):
      self._worker_meta_store_refs.append(ref)
  
file_path: mars/mars/services/meta/supervisor/core.py
imports: import asyncio
  from typing import Dict
  from ....None import oscar
  from ...session import SessionAPI
  from ..store import get_meta_store
label_desc: Use image node_id 2 for calling the MetaStoreActor obj's underlying member method code with example usage: obj.add_worker_meta_store(ref) without return types