def METHOD_NAME(self):
    net = caffe2_pb2.NetDef()
    net.name = 'test-idempotence'
    net.external_input[:] = ['W', 'X', 'b', 's']
    net.op.extend([
        core.CreateOperator(
            'FC',
            ['X', 'W', 'b'],
            ['Y']
        ),
        core.CreateOperator(
            'Add',
            ['Y', 's'],
            ['Z'],
            broadcast=True,
        )
    ])
    net.external_output[:] = ['Z']
    value_info = {'X': (TensorProto.FLOAT, [4, 2])}
    net_copy = copy.deepcopy(net)
    c2_onnx.Caffe2Frontend._ssa_rewrite(
        net_copy,
        None,
        value_info)
    self.assertEqual(net, net_copy)