code: def featurizer(self):
      return self._featurizer
  
imports: from collections import namedtuple
  from typing import Dict
  import torch
  import torch.nn
  from omegaconf import DictConfig
  from ..base_model import SSLBaseModel
  from ..common.heads import MultiTaskHead
  from ..common.layers import MixedEmbedding1dLayer
  from ..common.noise_generators import SwapNoiseCorrupter
label_desc: Use image node_id 4 for calling the DenoisingAutoEncoderModel obj's underlying member method code with example usage: obj.featurizer() and returns: self