code: def _get_job_id_from_submission_command(
      string: tp.Union[bytes, str]
  ) -> str:
      return string if isinstance(string, str) else string.decode()
  
imports: import contextlib
  import pickle
  import subprocess
  import sys
  import time
  import typing
  from pathlib import Path
  from unittest.mock import patch
  import pytest
  from .None import core, submission, utils
label_desc: Use image node_id 5 for calling the FakeExecutor obj's underlying member method code with example usage: obj._get_job_id_from_submission_command(string) and returns: unknown