code: def send_body_embed(b: Union[str, None] = Body(embed=True)):
      return b
  
file_path: fastapi/tests/test_required_noneable.py
imports: from typing import Union
  from fastapi import Body, FastAPI, Query
  from fastapi.testclient import TestClient
label_desc: Use image node_id 3 for calling a global function with example usage: send_body_embed(b) and returns: b