code: def test_cpp_callable_cleanup():
      alive_counts = m.test_cpp_callable_cleanup()
      assert alive_counts == [0, 1, 2, 1, 2, 1, 0]
  
file_path: coremltools/deps/pybind11/tests/test_callbacks.py
imports: import time
  from threading import Thread
  import pytest
  import env
  from pybind11_tests import callbacks
label_desc: Use image node_id 5 for calling a global function with example usage: test_cpp_callable_cleanup() without return types