class_docstr: WSGI input stream as defined in PEP 3333
code: def __iter__(self) -> Iterator[bytes]:
      ...
  
imports: from collections.abc import Callable, Iterable, Iterator
  from types import TracebackType
  from typing import Any, Protocol, TypeAlias
label_desc: Use image node_id 4 for calling the InputStream obj's underlying member method code with example usage: obj.__iter__() without return types