code: def testVectorSingleValue(self):
      test_value = constant_op.constant([b"I lov"])
      expected_tokens = [
          [ord("I"), ord(" "), ord("l"), ord("o"), ord("v")]
      ]
      expected_offset_starts = [[0, 1, 2, 3, 4]]
      expected_offset_ends = [[1, 2, 3, 4, 5]]
      tokens = self.tokenizer.tokenize(test_value)
      self.assertAllEqual(tokens, expected_tokens)
      (tokens, starts, ends) = self.tokenizer.tokenize_with_offsets(
          test_value
      )
      self.assertAllEqual(tokens, expected_tokens)
      self.assertAllEqual(starts, expected_offset_starts)
      self.assertAllEqual(ends, expected_offset_ends)
  
      detokenized = self.tokenizer.detokenize(tokens)
      self.assertAllEqual(detokenized, test_value)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.platform import test
  from tensorflow_text.python.ops.unicode_char_tokenizer import UnicodeCharTokenizer
label_desc: Use image node_id 4 for calling the UnicodeCharTokenizerOpTest obj's underlying member method code with example usage: obj.testVectorSingleValue() without return types