class_docstr: Abstract decoder module.
class_docstr_tok: ["Abstract","decoder","module","."]
docstr: Encode source label sequences.
  
  Args:
      labels: Label ID sequences.
  
  Returns:
      : Decoder output sequences.
docstr_tok: ["Encode","source","label","sequences",".","Args",":","labels",":","Label","ID","sequences",".","Returns",":",":","Decoder","output","sequences","."]
code: def forward(self, labels: torch.Tensor) -> torch.Tensor:
      """Encode source label sequences.
  
      Args:
          labels: Label ID sequences.
  
      Returns:
          : Decoder output sequences.
  
      """
      raise NotImplementedError
  
file_path: espnet/espnet2/asr_transducer/decoder/abs_decoder.py
imports: from abc import ABC, abstractmethod
  from typing import Any, Dict, List, Optional, Tuple, Union
  import torch
label_desc: Use image node_id 1 for calling the AbsDecoder obj's underlying member method code with example usage: obj.forward(labels) without return types