code: def batch(self, *delays):
      args_list, kwargs_list = self._gen_args_kwargs_list(delays)
      return self.call_with_lists(args_list, kwargs_list)
  
imports: import asyncio
  import inspect
  import textwrap
  from collections import namedtuple
  from dataclasses import dataclass
  from typing import Callable, Dict, Optional, Tuple
label_desc: Use image node_id 5 for calling the _ExtensibleWrapper obj's underlying member method code with example usage: obj.batch() and returns: self