code: def test_sliced_offsets_map_and_input_offset(self):
      txt = ragged_factory_ops.constant(
          [
              ["株式会社"],
              [""],
              ["ＫＡＤＯＫＡＷＡ"],
          ]
      )
      _, offsets_map = normalize_ops.normalize_utf8_with_offsets_map(
          txt, "NFKC"
      )
      post_norm_offsets = ragged_factory_ops.constant(
          [[[0, 1, 2]], [[]], [[0, 1, 2]]], dtype="int64"
      )
  
      sliced_offsets_map = offsets_map[2]
      sliced_post_norm_offsets = post_norm_offsets[2]
      sliced_pre_norm_offsets = normalize_ops.find_source_offsets(
          sliced_offsets_map, sliced_post_norm_offsets
      )
      expected = [[0, 3, 6]]
      self.assertAllEqual(expected, sliced_pre_norm_offsets)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  from tensorflow.python.framework import errors
  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 import normalize_ops
label_desc: Use image node_id 7 for calling the FindSourceOffsetsTest obj's underlying member method code with example usage: obj.test_sliced_offsets_map_and_input_offset() without return types