code: def test_pretrained_model_list(self):
      model_list_1 = list(BERTTokenizer._MODEL2URL.keys())
      model_list_2 = list(BERTTokenizer._MAX_INPUT_SIZE.keys())
  
      self.assertListEqual(model_list_1, model_list_2)
  
file_path: texar/tests/data/tokenizers/bert_tokenizer_test.py
imports: import os
  import pickle
  import tempfile
  import tensorflow
  from texar.tf.data.tokenizers.bert_tokenizer import BERTTokenizer
  from texar.tf.utils.test import pretrained_test
label_desc: Use image node_id 7 for calling the BERTTokenizerTest obj's underlying member method code with example usage: obj.test_pretrained_model_list() without return types