code: def _get_num_dataloaders(self, tag: str = "val"):
      if tag == "val":
          num_dataloaders = (
              len(self._validation_dl)
              if isinstance(self._validation_dl, List)
              else 1
          )
      elif tag == "test":
          num_dataloaders = (
              len(self._test_dl)
              if isinstance(self._test_dl, List)
              else 1
          )
      else:
          raise ValueError(f"Unexpected tag {tag}.")
  
      return num_dataloaders
  
imports: from abc import ABC, abstractmethod
  from typing import List, Union
  import hydra
  import torch
  from omegaconf import DictConfig, OmegaConf
  from pytorch_lightning import Trainer
  from nemo.collections.asr.metrics.audio import AudioMetricWrapper
  from nemo.core.classes import ModelPT
  from nemo.utils import logging, model_utils
label_desc: Use image node_id 3 for calling the AudioToAudioModel obj's underlying member method code with example usage: obj._get_num_dataloaders(tag) and returns: num_dataloaders