code: def read(r: io.BytesIO) -> io.StringIO:
      """docstring"""
  
file_path: sphinx/tests/roots/test-ext-autodoc/target/autodoc_type_aliases.py
imports: from __future__ import annotations
  import io
  from typing import Optional, overload
label_desc: Use image node_id 1 for calling a global function with example usage: read(r) without return types