class_docstr: Megatron T5 pretraining
class_docstr_tok: ["Megatron","T5","pretraining"]
code: def list_available_models(self):
      pass
  
imports: import enum
  import math
  from omegaconf.dictconfig import DictConfig
  from pytorch_lightning.trainer.trainer import Trainer
  from nemo.collections.nlp.data.language_modeling.megatron.dataset_utils import build_train_valid_test_datasets
  from nemo.collections.nlp.models.language_modeling.megatron_lm_encoder_decoder_model import MegatronLMEncoderDecoderModel
  from nemo.utils import logging
label_desc: Use image node_id 10 for calling the MegatronT5Model obj's underlying member method code with example usage: obj.list_available_models() without return types