code: def testUtf8BinarizeVector(self):
      test_value = ["爱上一个不回", "foo"]
      expected_values = []
      for s in test_value:
          expected_values.append(
              sum(
                  [
                      self._lowest_bits_little_endian(c, n_bits=4)
                      for c in s[:3]
                  ],
                  [],
              )
          )
      values = tf_text.utf8_binarize(
          test_value, word_length=3, bits_per_char=4
      )
      self.assertAllEqual(values, expected_values)
  
file_path: text/tensorflow_text/python/ops/utf8_binarize_op_test.py
imports: import numpy
  import tensorflow
  import tensorflow_text
  from tensorflow.lite.python import interpreter
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 3 for calling the Utf8BinarizeTest obj's underlying member method code with example usage: obj.testUtf8BinarizeVector() without return types