code: def test_normalize_nfkd(self):
      txt = [
          "\u1e9b\u0323",
      ]
      expected = [
          "\u0073\u0323\u0307".encode("utf-8"),
      ]
      self.assertAllEqual(
          expected, normalize_ops.normalize_utf8(txt, "NFKD")
      )
      self.assertAllEqual(
          expected, normalize_ops.normalize_utf8(txt, "nfkd")
      )
  
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 10 for calling the NormalizeOpsTest obj's underlying member method code with example usage: obj.test_normalize_nfkd() without return types