code: def test_list_backbone_names():
      assert len(list_backbone_names()) > 0
  
file_path: gluon-nlp/tests/test_models.py
imports: import tempfile
  import pytest
  import mxnet
  import os
  import numpy
  import numpy.testing
  from gluonnlp.models import get_backbone, list_backbone_names
  from gluonnlp.utils.parameter import count_parameters
  from gluonnlp.utils.lazy_imports import try_import_tvm
label_desc: Use image node_id 1 for calling a global function with example usage: test_list_backbone_names() without return types