code: def __getitem__(self, key):
      return self._outs[key]
  
imports: import math
  import operator
  import os.path
  import time
  from collections.abc import Iterator
  from typing import Callable, List, Optional, Union
  import torch
  from omegaconf import DictConfig
  from nemo.collections.asr.data.audio_to_text import ASRManifestProcessor, expand_sharded_filepaths
  from nemo.collections.common.parts.preprocessing import parsers
  from nemo.utils import logging, model_utils
label_desc: Use image node_id 3 for calling the DALIOutputs obj's underlying member method code with example usage: obj.__getitem__(key) and returns: self