code: def handle_test_main(parent_main_fn, *args, **kwargs):
      """Function that wraps the test main in a multiprocessing-friendly way.
  
      This function additionally accepts an `extra_state_savers` kwarg;
      users can provide a list of `tf_agents.multiprocessing.StateSaver` instances,
      where a `StateSaver` tells multiprocessing how to store some global state
      and how to restore it in the subprocess.
  
      Args:
        parent_main_fn: A callable.
        *args: rgs for `parent_main_fn`.
        **kwargs: kwargs for `parent_main_fn`. This may also include
          `extra_state_savers` kwarg.
  
      Returns:
        Output of `parent_main_fn`.
      """
      extra_state_savers = kwargs.pop("extra_state_savers", [])
      _STATE_SAVERS.extend(extra_state_savers)
      _INITIALIZED[0] = True
      return parent_main_fn(*args, **kwargs)
  
file_path: agents/tf_agents/system/default/multiprocessing_core.py
imports: import abc
  import multiprocessing
  from typing import Any, Text
  from absl import app
label_desc: Use image node_id 4 for calling a global function with example usage: handle_test_main(parent_main_fn) and returns: parent_main_fn