code: def test_lambda_closure_cleanup():
      m.test_lambda_closure_cleanup()
      cstats = m.payload_cstats()
      assert cstats.alive() == 0
      assert cstats.copy_constructions == 1
      assert cstats.move_constructions >= 1
  
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 4 for calling a global function with example usage: test_lambda_closure_cleanup() without return types