code: def setUp(self):
      class Model(chainer.Chain):
          def __init__(self):
              super(Model, self).__init__()
              with self.init_scope():
                  self.prelu = L.PReLU()
  
          def __call__(self, x):
              return self.prelu(x)
  
      self.model = Model()
      self.x = input_generator.increasing(2, 5)
  
file_path: chainer/tests/onnx_chainer_tests/functions_tests/test_activations.py
imports: import chainer
  import chainer.functions
  import chainer.links
  from chainer import testing
  from onnx_chainer.testing import input_generator
  from onnx_chainer_tests.helper import ONNXModelTest
label_desc: Use image node_id 1 for calling the TestPReLU obj's underlying member method code with example usage: obj.setUp() and returns: self