code: def forward(self):
      x = chainer.Variable(self.x)
      W = chainer.Variable(self.W)
      return F.dilated_convolution_2d(
          x,
          W,
          None,
          stride=self.stride,
          pad=self.pad,
          dilate=self.dilate,
      )
  
imports: import unittest
  import numpy
  import chainer
  from chainer import backend
  from chainer.backends import cuda
  import chainer.functions
  from chainer import gradient_check
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 2 for calling the TestDilatedConvolution2DCudnnCall obj's underlying member method code with example usage: obj.forward() and returns: F