code: def check_call(self):
      xp = self.link.xp
      x = chainer.Variable(
          xp.random.uniform(low=-1, high=1, size=(2, 3, 64, 64)).astype(
              xp.float32
          )
      )
      y1, y2 = self.link(x)
  
      self.assertIsInstance(y1, chainer.Variable)
      self.assertIsInstance(y1.data, xp.ndarray)
      self.assertEqual(y1.shape, (2, 256, 16, 16))
      self.assertIsInstance(y2, chainer.Variable)
      self.assertIsInstance(y2.data, xp.ndarray)
      self.assertEqual(y2.shape, (2, 2048, 8, 8))
  
file_path: chainercv/tests/links_tests/model_tests/deeplab_tests/test_xception.py
imports: import unittest
  import chainer
  from chainer import testing
  from chainer.testing import attr
  from chainercv.links.model.deeplab.xception import Xception65
label_desc: Use image node_id 2 for calling the TestXception obj's underlying member method code with example usage: obj.check_call() without return types