code: def test_contextmanager_doc_attrib(self):
      baz = self._create_contextmanager_attribs()
      self.assertEqual(baz.__doc__, "Whee!")
  
imports: import asyncio
  from contextlib import asynccontextmanager, AbstractAsyncContextManager, AsyncExitStack, nullcontext, aclosing, contextmanager
  from test import support
  import unittest
  import traceback
  from test.test_contextlib import TestBaseExitStack
label_desc: Use image node_id 3 for calling the AsyncContextManagerTestCase obj's underlying member method code with example usage: obj.test_contextmanager_doc_attrib() without return types