code: def testGPUWait2(self):
      wait_for_gpu("1", delay_s=0)
  
imports: import copy
  from collections import OrderedDict
  import pytest
  import sys
  import unittest
  from unittest.mock import patch
  from ray.tune.utils.util import wait_for_gpu
  from ray.tune.utils.util import flatten_dict, unflatten_dict, unflatten_list_dict
label_desc: Use image node_id 3 for calling the GPUTest obj's underlying member method code with example usage: obj.testGPUWait2() without return types