class_docstr: Test suite for classes defined in `transforms` module
class_docstr_tok: ["Test","suite","for","classes","defined","in","`","transforms","`","module"]
code: def test_batch_Vol(self):
      waveform = common_utils.get_whitenoise(
          sample_rate=8000, duration=1, n_channels=6
      )
      waveform = waveform.reshape(3, 2, -1)
      transform = T.Vol(gain=1.1)
  
      self.assert_batch_consistency(transform, waveform)
  
imports: import os
  import torch
  from parameterized import parameterized
  from torchaudio import transforms
  from torchaudio_unittest import common_utils
label_desc: Use image node_id 15 for calling the TestTransforms obj's underlying member method code with example usage: obj.test_batch_Vol() without return types