code: def test_tokenize(self):
      tokenizer = BERTTokenizer.load(self.vocab_file)
  
      tokens = tokenizer.map_text_to_token("UNwant\u00E9d,running")
      self.assertListEqual(
          tokens, ["un", "##want", "##ed", ",", "runn", "##ing"]
      )
  
      ids = tokenizer.map_token_to_id(tokens)
      self.assertListEqual(ids, [7, 4, 5, 10, 8, 9])
  
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 4 for calling the BERTTokenizerTest obj's underlying member method code with example usage: obj.test_tokenize() without return types