code: def __delattr__(self, key: str) -> NoReturn:
      msg = f"{self.__class__.__name__} is immutable"
      raise AttributeError(msg)
  
imports: from __future__ import annotations
  import os
  import warnings
  import zlib
  from typing import TYPE_CHECKING, Any, NoReturn
  from sphinx.deprecation import RemovedInSphinx90Warning
  from sphinx.errors import ThemeError
label_desc: Use image node_id 6 for calling the _JavaScript obj's underlying member method code with example usage: obj.__delattr__(key) without return types