docstr: sliding_window_cmn should be numerically compatible with apply-cmvn-sliding
code: def test_sliding_window_cmn(self):
      """sliding_window_cmn should be numerically compatible with apply-cmvn-sliding"""
      kwargs = {
          "cmn_window": 600,
          "min_cmn_window": 100,
          "center": False,
          "norm_vars": False,
      }
  
      tensor = torch.randn(40, 10, dtype=self.dtype, device=self.device)
      result = F.sliding_window_cmn(tensor, **kwargs)
      command = (
          ["apply-cmvn-sliding"]
          + convert_args(**kwargs)
          + ["ark:-", "ark:-"]
      )
      kaldi_result = run_kaldi(command, "ark", tensor)
      self.assert_equal(result, expected=kaldi_result)
  
file_path: audio/test/torchaudio_unittest/functional/kaldi_compatibility_test_impl.py
imports: import torch
  import torchaudio.functional
  from torchaudio_unittest.common_utils import skipIfNoExec, TempDirMixin, TestBaseMixin
  from torchaudio_unittest.common_utils.kaldi_utils import convert_args, run_kaldi
label_desc: Use image node_id 2 for calling the Kaldi obj's underlying member method code with example usage: obj.test_sliding_window_cmn() without return types