code: def extra_repr(self):
      return f"norm_means={self.norm_means}, norm_vars={self.norm_vars}"
  
file_path: espnet/espnet2/layers/utterance_mvn.py
imports: from typing import Tuple
  import torch
  from typeguard import check_argument_types
  from espnet2.layers.abs_normalize import AbsNormalize
  from espnet.nets.pytorch_backend.nets_utils import make_pad_mask
label_desc: Use image node_id 2 for calling the UtteranceMVN obj's underlying member method code with example usage: obj.extra_repr() and returns: str, self, str, self