code: def setUpClass(cls):
      cls.root_dir = cls.get_base_temp_dir()
      cls.root_dir = dataset_dir = os.path.join(cls.root_dir, "tedlium")
      cls.samples = get_mock_dataset(dataset_dir)
  
file_path: audio/test/torchaudio_unittest/datasets/tedlium_test.py
imports: import os
  from pathlib import Path
  from torchaudio.datasets import tedlium
  from torchaudio_unittest.common_utils import get_whitenoise, save_wav, TempDirMixin, TorchaudioTestCase
label_desc: Use image node_id 1 for calling the Tedlium obj's underlying member method code with example usage: obj.setUpClass(cls) without return types