code: def test_get_item_slice_step(self, name, slices):
      skip_opsets = tuple(range(7, 11))
      name = "get_item_" + name
  
      model = chainer.Sequential(lambda x: F.get_item(x, slices=slices))
      x = input_generator.increasing(2, 3, 4)
  
      self.expect(
          model,
          x,
          name=name,
          expected_num_initializers=0,
          skip_opset_version=skip_opsets,
      )
  
imports: import chainer
  import chainer.functions
  from chainer import testing
  import numpy
  import onnx
  import pytest
  from onnx_chainer import export
  from onnx_chainer.testing import input_generator
  from onnx_chainer_tests.helper import ONNXModelChecker
  from onnx_chainer_tests.helper import ONNXModelTest
label_desc: Use image node_id 2 for calling the TestGetItem obj's underlying member method code with example usage: obj.test_get_item_slice_step(name, slices) without return types