code: def test_vctk_str(self):
      dataset = vctk.VCTK_092(self.root_dir, audio_ext=".wav")
      self._test_vctk(dataset)
  
file_path: audio/test/torchaudio_unittest/datasets/vctk_test.py
imports: import os
  from pathlib import Path
  from torchaudio.datasets import vctk
  from torchaudio_unittest.common_utils import get_whitenoise, normalize_wav, save_wav, TempDirMixin, TorchaudioTestCase
label_desc: Use image node_id 3 for calling the TestVCTK obj's underlying member method code with example usage: obj.test_vctk_str() without return types