code: def __getitem__(self, key) -> "CallableProxy":
      return CallableProxy(self._callable, self._accessor[key])
  
imports: from __future__ import annotations
  import dataclasses
  import typing
  import typing_extensions
label_desc: Use image node_id 4 for calling the CallableProxy obj's underlying member method code with example usage: obj.__getitem__(key) and returns: CallableProxy