code: def testBleuTokenize(self):
      self.assertEqual(
          bleu_hook.bleu_tokenize("hi, “there”"),
          ["hi", ",", "“", "there", "”"],
      )
  
file_path: tensor2tensor/tensor2tensor/utils/bleu_hook_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import tempfile
  import six
  from tensor2tensor.data_generators import text_encoder
  from tensor2tensor.utils import bleu_hook
  import tensorflow.compat.v1
label_desc: Use image node_id 5 for calling the BleuHookTest obj's underlying member method code with example usage: obj.testBleuTokenize() without return types