code: def __str__(self):
      return self.uuid
  
file_path: fastapi/tests/test_inherited_custom_class.py
imports: import uuid
  import pytest
  from fastapi import FastAPI
  from fastapi.testclient import TestClient
  from pydantic import BaseModel
  from .utils import needs_pydanticv1, needs_pydanticv2
label_desc: Use image node_id 2 for calling the MyUuid obj's underlying member method code with example usage: obj.__str__() and returns: self