code: def test4DimMatrix(self, encoding):
      test_value = constant_op.constant(
          [
              [[[72, 101, 108, 108, 111]], [[87, 111, 114, 108, 100]]],
              [
                  [[102, 105, 120, 101, 100]],
                  [[119, 111, 114, 100, 115]],
              ],
              [[[72, 121, 112, 101, 114]], [[99, 117, 98, 101, 46]]],
          ],
          np.int32,
      )
      expected_value = [
          [["Hello".encode(encoding)], ["World".encode(encoding)]],
          [["fixed".encode(encoding)], ["words".encode(encoding)]],
          [["Hyper".encode(encoding)], ["cube.".encode(encoding)]],
      ]
      unicode_encode_op = ragged_string_ops.unicode_encode(
          test_value, encoding
      )
      self.assertAllEqual(unicode_encode_op, expected_value)
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.ops.ragged import ragged_string_ops
  from tensorflow.python.ops.ragged import ragged_tensor
  from tensorflow.python.ops.ragged import ragged_tensor_value
  from tensorflow.python.platform import test
label_desc: Use image node_id 10 for calling the UnicodeEncodeOpTest obj's underlying member method code with example usage: obj.test4DimMatrix(encoding) without return types