code: def test_multiple_ray_init(self, ray_start_stop):
      cmd = (
          "python -c 'import ray; ray.init(); ray.shutdown(); "
          "ray.init(); ray.shutdown();'"
      )
      stdout, _ = _run_cmd(f"ray job submit -- {cmd}")
      assert "succeeded" in stdout
  
imports: from contextlib import contextmanager
  import ray
  import json
  import os
  import logging
  import sys
  import subprocess
  from typing import Optional, Tuple
  import pytest
label_desc: Use image node_id 4 for calling the TestJobSubmit obj's underlying member method code with example usage: obj.test_multiple_ray_init(ray_start_stop) without return types