code: def test_reverse_sequence_different_data_types(
      self, compute_unit, backend, x_dtype, length_dtype
  ):
      def build(x, length):
          return mb.reverse_sequence(
              x=x, lengths=length, seq_axis=1, batch_axis=0
          )
  
      x_val = np.array(
          [
              [1, 2, 3, 4, 5, 0, 0, 0],
              [1, 2, 0, 0, 0, 0, 0, 0],
              [1, 2, 3, 4, 0, 0, 0, 0],
              [1, 2, 3, 4, 5, 6, 7, 8],
          ],
          dtype=x_dtype,
      )
      length_val = np.array([7, 2, 3, 5], dtype=length_dtype)
      x_builtin_dtype = numpy_type_to_builtin_type(x_dtype)
      length_builtin_dtype = numpy_type_to_builtin_type(length_dtype)
  
      input_placeholders = {
          "x": mb.placeholder(shape=x_val.shape, dtype=x_builtin_dtype),
          "length": mb.placeholder(
              shape=length_val.shape, dtype=length_builtin_dtype
          ),
      }
      input_values = {"x": x_val, "length": length_val}
      expected_output_types = (4, 8, x_builtin_dtype)
      expected_outputs = np.array(
          [
              [0, 0, 5, 4, 3, 2, 1, 0],
              [2, 1, 0, 0, 0, 0, 0, 0],
              [3, 2, 1, 4, 0, 0, 0, 0],
              [5, 4, 3, 2, 1, 6, 7, 8],
          ],
          dtype=x_dtype,
      )
  
      run_compare_builder(
          build,
          input_placeholders,
          input_values,
          expected_output_types,
          expected_outputs,
          compute_unit=compute_unit,
          backend=backend,
      )
  
imports: import itertools
  import numpy
  import pytest
  from coremltools.converters.mil.mil import Builder
  from coremltools.converters.mil.mil import types
  from coremltools.converters.mil.mil.ops.tests.iOS14.test_tensor_transformation import TestSliceByIndex
  from coremltools.converters.mil.mil.ops.tests.iOS14.test_tensor_transformation import TestSliceBySize
  from coremltools.converters.mil.mil.ops.tests.iOS16.test_tensor_transformation import TestReshapeLike
  from coremltools.converters.mil.mil.ops.tests.iOS17 import backends
  from coremltools.converters.mil.mil.ops.tests.testing_utils import run_compare_builder
  from coremltools.converters.mil.mil.types.type_mapping import numpy_type_to_builtin_type
  from coremltools.converters.mil.testing_reqs import compute_units
label_desc: Use image node_id 1 for calling the TestReverseSequence obj's underlying member method code with example usage: obj.test_reverse_sequence_different_data_types(compute_unit, backend, x_dtype, length_dtype) and returns: mb