code: def setUpClass(cls):
      super().setUpClass()
      cls._tmpdir = tempfile.mkdtemp()
      cls.configPath = os.path.join(cls._tmpdir, "default_config.yml")
  
      write_basic_config(save_location=cls.configPath)
      cls._launch_args = [
          "accelerate",
          "launch",
          "--config_file",
          cls.configPath,
      ]
  
imports: import ast
  import os
  import re
  import shutil
  import tempfile
  import unittest
  from unittest import mock
  import torch
  from accelerate.test_utils.examples import compare_against_test
  from accelerate.test_utils.testing import TempDirTestCase, require_trackers, run_command, slow
  from accelerate.utils import write_basic_config
label_desc: Use image node_id 1 for calling the FeatureExamplesTests obj's underlying member method code with example usage: obj.setUpClass(cls) without return types