code: def test_error_when_serializing_callable_without_name(self):
      i = C()
      with pytest.raises(
          TypeError,
          match="cannot serialize object of type <class 'tests.serialization.test_serde.C'>",
      ):
          serialize(i)
  
imports: from __future__ import annotations
  import datetime
  import enum
  from dataclasses import dataclass
  from importlib import import_module
  from typing import ClassVar
  import attr
  import pytest
  from pydantic import BaseModel
  from airflow.datasets import Dataset
  from airflow.serialization.serde import CLASSNAME, DATA, SCHEMA_ID, VERSION, _get_patterns, _match, deserialize, serialize
  from airflow.utils.module_loading import import_string, iter_namespace, qualname
  from tests.test_utils.config import conf_vars
label_desc: Use image node_id 22 for calling the TestSerDe obj's underlying member method code with example usage: obj.test_error_when_serializing_callable_without_name() without return types