code: def _setup_normalizer(self, cfg):
      if "text_normalizer" in cfg:
          normalizer_kwargs = {}
  
          if "whitelist" in cfg.text_normalizer:
              normalizer_kwargs["whitelist"] = self.register_artifact(
                  "text_normalizer.whitelist",
                  cfg.text_normalizer.whitelist,
              )
  
          try:
              import nemo_text_processing
  
              self.normalizer = instantiate(
                  cfg.text_normalizer, **normalizer_kwargs
              )
              self.text_normalizer_call = self.normalizer.normalize
          except Exception as e:
              logging.error(e)
              raise ImportError(
                  "`nemo_text_processing` not installed, see https://github.com/NVIDIA/NeMo-text-processing for more details"
              )
          self.text_normalizer_call = self.normalizer.normalize
          if "text_normalizer_call_kwargs" in cfg:
              self.text_normalizer_call_kwargs = (
                  cfg.text_normalizer_call_kwargs
              )
  
imports: import contextlib
  import torch
  from hydra.utils import instantiate
  from omegaconf import DictConfig, OmegaConf
  from pytorch_lightning import Trainer
  from pytorch_lightning.loggers import TensorBoardLogger
  from nemo.collections.common.tokenizers.text_to_speech.tts_tokenizers import BaseTokenizer
  from nemo.collections.tts.losses.radttsloss import AttentionBinarizationLoss, RADTTSLoss
  from nemo.collections.tts.models.base import SpectrogramGenerator
  from nemo.collections.tts.parts.utils.helpers import batch_from_ragged, g2p_backward_compatible_support, plot_alignment_to_numpy, regulate_len, sample_tts_input
  from nemo.core.classes import Exportable
  from nemo.core.classes.common import typecheck
  from nemo.core.neural_types.elements import Index, MelSpectrogramType, RegressionValuesType, TokenDurationType, TokenIndex
  from nemo.core.neural_types.neural_type import NeuralType
  from nemo.core.optim.radam import RAdam
  from nemo.utils import logging
  from nemo.utils.decorators import experimental
label_desc: Use image node_id 14 for calling the RadTTSModel obj's underlying member method code with example usage: obj._setup_normalizer(cfg) without return types