code: def test_list_pretrained_models(self):
      pretrained_lm_models = (
          nemo_nlp.modules.get_pretrained_lm_models_list()
      )
      assert len(pretrained_lm_models) > 0
  
file_path: NeMo/tests/collections/nlp/test_megatron.py
imports: import os
  import tempfile
  import onnx
  import pytest
  import torch
  from omegaconf import OmegaConf
  import nemo.collections.nlp
  from nemo.core.classes import typecheck
label_desc: Use image node_id 1 for calling the TestMegatron obj's underlying member method code with example usage: obj.test_list_pretrained_models() without return types