code: def build_collate_fn(
      cls, args: argparse.Namespace, train: bool
  ) -> Callable[
      [Collection[Tuple[str, Dict[str, np.ndarray]]]],
      Tuple[List[str], Dict[str, torch.Tensor]],
  ]:
      assert check_argument_types()
      # NOTE(kamo): int value = 0 is reserved by CTC-blank symbol
      return CommonCollateFn(float_pad_value=0.0, int_pad_value=-1)
  
imports: import argparse
  import logging
  from typing import Callable, Collection, Dict, List, Optional, Tuple
  import numpy
  import torch
  from typeguard import check_argument_types, check_return_type
  from espnet2.asr.encoder.abs_encoder import AbsEncoder
  from espnet2.asr.encoder.transformer_encoder import TransformerEncoder
  from espnet2.asr.frontend.abs_frontend import AbsFrontend
  from espnet2.asr.frontend.default import DefaultFrontend
  from espnet2.asr.frontend.fused import FusedFrontends
  from espnet2.asr.frontend.s3prl import S3prlFrontend
  from espnet2.asr.frontend.windowing import SlidingWindow
  from espnet2.asr.preencoder.abs_preencoder import AbsPreEncoder
  from espnet2.asr.preencoder.linear import LinearProjection
  from espnet2.asr.preencoder.sinc import LightweightSincConvs
  from espnet2.asr.specaug.abs_specaug import AbsSpecAug
  from espnet2.asr.specaug.specaug import SpecAug
  from espnet2.asvspoof.decoder.abs_decoder import AbsDecoder
  from espnet2.asvspoof.decoder.linear_decoder import LinearDecoder
  from espnet2.asvspoof.espnet_model import ESPnetASVSpoofModel
  from espnet2.asvspoof.loss.abs_loss import AbsASVSpoofLoss
  from espnet2.asvspoof.loss.am_softmax_loss import ASVSpoofAMSoftmaxLoss
  from espnet2.asvspoof.loss.binary_loss import ASVSpoofBinaryLoss
  from espnet2.asvspoof.loss.oc_softmax_loss import ASVSpoofOCSoftmaxLoss
  from espnet2.layers.abs_normalize import AbsNormalize
  from espnet2.layers.global_mvn import GlobalMVN
  from espnet2.layers.utterance_mvn import UtteranceMVN
  from espnet2.tasks.abs_task import AbsTask
  from espnet2.torch_utils.initialize import initialize
  from espnet2.train.class_choices import ClassChoices
  from espnet2.train.collate_fn import CommonCollateFn
  from espnet2.train.preprocessor import CommonPreprocessor
  from espnet2.train.trainer import Trainer
  from espnet2.utils.nested_dict_action import NestedDictAction
  from espnet2.utils.types import int_or_none, str2bool, str_or_none
label_desc: Use image node_id 2 for calling the ASVSpoofTask obj's underlying member method code with example usage: obj.build_collate_fn(cls, args, train) and returns: CommonCollateFn