code: def test_is():
      import functools
  
      # "Python 3.8+ should use standard implementation.")
      assert cached_property is functools.cached_property
  
imports: import concurrent.futures
  import sys
  import threading
  import pytest
  from flash.core.serve._compat.cached_property import cached_property
  from flash.core.utilities.imports import _TOPIC_SERVE_AVAILABLE
label_desc: Use image node_id 1 for calling the TestPy38Plus obj's underlying member method code with example usage: obj.test_is() without return types