code: def __getattr__(self, attr):
      return getattr(self._store, attr)
  
file_path: mars/mars/services/meta/worker/core.py
imports: from typing import Dict
  from ....None import oscar
  from ....lib.aio import alru_cache
  from ...cluster import ClusterAPI
  from ..store import get_meta_store
label_desc: Use image node_id 3 for calling the WorkerMetaStoreActor obj's underlying member method code with example usage: obj.__getattr__(attr) and returns: getattr