code: def get_model(self):
      class Model(chainer.Chain):
          def __init__(self):
              super().__init__()
              with self.init_scope():
                  self.l = L.Linear(None, 2)
  
          def half(self, xs, value=0.5):
              return xs * value
  
          def forward(self, xs):
              h = self.l(xs)
              h = self.half(h)
              return F.sum(chainer.as_variable(h))
  
      return Model()
  
imports: import os
  import warnings
  import chainer
  import chainer.functions
  import chainer.links
  from chainer import testing
  import numpy
  import onnx
  import pytest
  from onnx_chainer import export
  from onnx_chainer import export_testcase
  from onnx_chainer import onnx_helper
  from onnx_chainer.replace_func import as_funcnode
  from onnx_chainer.replace_func import fake_as_funcnode
  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 1 for calling the TestReplaceWithOutputGrad obj's underlying member method code with example usage: obj.get_model() and returns: Model, unknown, F