code: def __getitem__(self, key):
      return DelayedAccessor(lambda x: x[key])
  
imports: from __future__ import annotations
  import dataclasses
  import typing
  import typing_extensions
label_desc: Use image node_id 3 for calling the DelayedAccessor obj's underlying member method code with example usage: obj.__getitem__(key) and returns: DelayedAccessor