code: def setUp(self):
      self.path = Path(__file__).parent.absolute()
  
      # Save the task config file on disk
      config = self._get_task_config()
  
      with tempfile.NamedTemporaryFile(
          mode="w", delete=False
      ) as file_io:
          json.dump(config, file_io)
          file_io.flush()
          self.config_path = file_io.name
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import json
  import logging
  import os
  import subprocess
  import tempfile
  import unittest
  from pathlib import Path
  import classy_vision.optim
  import torch
  import torch.distributed
  from classy_vision.optim.zero import ZeRO
  from test.generic.config_utils import get_distributed_launch_cmd, get_fast_test_task_config
  from test.generic.optim_test_util import TestOptimizer
label_desc: Use image node_id 1 for calling the TestOptimizerStateSharding obj's underlying member method code with example usage: obj.setUp() without return types