code: def setUp(self):
      self.link = links.DilatedConvolution2D(*self.args, **self.kwargs)
      self.x = numpy.random.uniform(-1, 1, (2, 3, 4, 3)).astype(
          numpy.float32
      )
      self.link(chainer.Variable(self.x))
      b = self.link.b.data
      b[...] = numpy.random.uniform(-1, 1, b.shape)
      self.link.cleargrads()
      self.gy = numpy.random.uniform(-1, 1, (2, 2, 2, 2)).astype(
          numpy.float32
      )
  
imports: import unittest
  import numpy
  import six.moves.cPickle
  import chainer
  from chainer.backends import cuda
  from chainer import gradient_check
  from chainer import links
  from chainer import testing
  from chainer.testing import attr
  from chainer.utils import conv
label_desc: Use image node_id 1 for calling the TestDilatedConvolution2DParameterShapePlaceholder obj's underlying member method code with example usage: obj.setUp() without return types