code: def tearDownClass(cls):
      cls.local_audio_paths = []
      cls.audios = []
      cls.sample_rates = []
  
file_path: AugLy/augly/tests/audio_tests/base_unit_test.py
imports: import os
  import tempfile
  import unittest
  from typing import Callable
  import numpy
  from augly.tests import AudioAugConfig
  from augly.utils import pathmgr, TEST_URI
  from augly.utils.libsndfile import install_libsndfile
  import librosa
  import soundfile
label_desc: Use image node_id 6 for calling the BaseAudioUnitTest obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types