code: def build_criterion(self, args):
      from fairseq import criterions
  
      if (
          self.data_cfg.prepend_tgt_lang_tag
          and args.ignore_prefix_size != 1
      ):
          raise ValueError(
              'Please set "--ignore-prefix-size 1" since '
              "target language ID token is prepended as BOS."
          )
      return criterions.build_criterion(args, self)
  
imports: import logging
  from argparse import Namespace
  from pathlib import Path
  from typing import List
  from fairseq.data import Dictionary, encoders
  from fairseq.data.audio.audio_utils import get_features_or_waveform
  from fairseq.data.audio.data_cfg import MultitaskConfig
  from fairseq.data.audio.speech_to_text_dataset import S2TDataConfig, SpeechToTextDataset, SpeechToTextDatasetCreator, TextTargetMultitaskData
  from fairseq.tasks import LegacyFairseqTask, register_task
label_desc: Use image node_id 5 for calling the SpeechToTextTask obj's underlying member method code with example usage: obj.build_criterion(args) and returns: criterions