code: def get_pool_config(self, process_index: int):
      return self._conf["pools"][process_index]
  
file_path: mars/mars/oscar/backends/config.py
imports: from typing import Union, List, Dict, Any
label_desc: Use image node_id 4 for calling the ActorPoolConfig obj's underlying member method code with example usage: obj.get_pool_config(process_index) and returns: self