code: def length(
      token_lprob: torch.Tensor,
      length_lprob: torch.Tensor,
      target_lengths: torch.Tensor,
  ) -> torch.Tensor:
      return length_lprob
  
imports: from enum import Enum
  from typing import Dict, Optional, Tuple
  import torch
  from pytext.common.constants import TORCH_VERSION
  from pytext.config import ConfigBase
  from pytext.models.module import Module
  from pytext.torchscript.vocab import ScriptVocabulary
  from torch import Tensor
label_desc: Use image node_id 4 for calling a global function with example usage: length(token_lprob, length_lprob, target_lengths) and returns: length_lprob