code: def get_client() -> TestClient:
      from docs_src.conditional_openapi import tutorial001
  
      importlib.reload(tutorial001)
  
      client = TestClient(tutorial001.app)
      return client
  
imports: import importlib
  from fastapi.testclient import TestClient
  from ...utils import needs_pydanticv2
label_desc: Use image node_id 1 for calling a global function with example usage: get_client() and returns: client