code: def test_builder_to_backend_smoke(self, use_cpu_only, backend):
      # original input type is (1, 4, 1, 1, fp32)
      val = np.array(
          [[[[9.0]], [[5.0]], [[1.0]], [[3.0]]]], dtype=np.float32
      )
      input_placeholders = {"x": mb.placeholder(shape=val.shape)}
      input_values = {"x": val}
  
      def build(x):
          return [mb.sliding_windows(x=x, axis=1, size=2)]
  
      expected_output_types = (1, 3, 2, 1, 1, types.fp32)
      expected_outputs = np.array(
          [
              [
                  [[[9.0]], [[5.0]]],
                  [[[5.0]], [[1.0]]],
                  [[[1.0]], [[3.0]]],
              ]
          ],
          dtype=np.float32,
      )
  
      run_compare_builder(
          build,
          input_placeholders,
          input_values,
          expected_output_types,
          expected_outputs,
          use_cpu_only=use_cpu_only,
          backend=backend,
      )
  
imports: from coremltools.converters.mil import testing_reqs
  from coremltools.converters.mil.mil import get_new_symbol, get_new_variadic_symbol
  from coremltools.converters.mil.testing_reqs import *
  from .testing_utils import UNK_SYM, UNK_VARIADIC, run_compare_builder
label_desc: Use image node_id 1 for calling the TestSlidingWindows obj's underlying member method code with example usage: obj.test_builder_to_backend_smoke(use_cpu_only, backend) and returns: list