code: def test_list_pretrained_electra():
      assert len(list_pretrained_electra()) > 0
  
file_path: gluon-nlp/tests/test_models_electra.py
imports: import pytest
  import numpy
  from numpy.testing import assert_allclose
  import mxnet
  import tempfile
  from gluonnlp.models.electra import ElectraModel, ElectraDiscriminator, ElectraGenerator, list_pretrained_electra, get_pretrained_electra, get_generator_cfg
  from gluonnlp.utils.testing import verify_backbone_fp16
label_desc: Use image node_id 1 for calling a global function with example usage: test_list_pretrained_electra() without return types