code: def read_current_user(current_user: User = Depends(get_current_user)):
      return current_user
  
file_path: fastapi/tests/test_security_api_key_header.py
imports: from fastapi import Depends, FastAPI, Security
  from fastapi.security import APIKeyHeader
  from fastapi.testclient import TestClient
  from pydantic import BaseModel
label_desc: Use image node_id 2 for calling a global function with example usage: read_current_user(current_user) and returns: current_user