code: def test_multiprocessing():
      """This tests exists to ensure there is no hang in pytest."""
      from multiprocessing.pool import Pool
  
      pool = Pool()
      results = []
      num_tasks = 32
      for i in range(num_tasks):
          result = pool.apply_async(
              _add, (i, i), error_callback=_err_handler
          )
          results.append(result)
      counter = 0
      for i in range(num_tasks):
          counter += results[i].get()
      assert counter == 992
      pool.close()
  
file_path: interpret/python/powerlift/tests/powerlift/bench/test_experiment.py
imports: from powerlift.bench import Experiment, Store
  from powerlift.executors.docker import InsecureDocker
  from powerlift.executors.localmachine import LocalMachine
  from powerlift.executors.azure_ci import AzureContainerInstance
  import pytest
  import os
label_desc: Use image node_id 5 for calling a global function with example usage: test_multiprocessing() without return types