code: def test_list_pretrained_mt5():
      assert len(list_pretrained_mt5()) > 0
  
imports: import pytest
  import tempfile
  from gluonnlp.models.mt5 import MT5Model, MT5Inference, mt5_cfg_reg, list_pretrained_mt5, get_pretrained_mt5
label_desc: Use image node_id 1 for calling a global function with example usage: test_list_pretrained_mt5() without return types