code: def forward_rawwav(
      self, input: torch.Tensor, ilens: torch.Tensor
  ) -> Tuple[torch.Tensor, torch.Tensor, OrderedDict]:
      raise NotImplementedError
  
file_path: espnet/espnet2/enh/abs_enh.py
imports: from abc import ABC, abstractmethod
  from collections import OrderedDict
  from typing import Tuple
  import torch
label_desc: Use image node_id 2 for calling the AbsEnhancement obj's underlying member method code with example usage: obj.forward_rawwav(input, ilens) without return types