code: def setUp(self):
      in_channels = 3
      out_channels = 2
      batch_size = 2
      h = 9
      w = 9
  
      kh, kw, sy, sx, ph, pw = self.params
  
      self.stride = (sy, sx)
      self.pad = (ph, pw)
  
      self.W = numpy.random.normal(
          size=(out_channels, in_channels, kh, kw)
      ).astype(numpy.float32)
      self.b = numpy.random.uniform(size=(out_channels,)).astype(
          numpy.float32
      )
  
      self.x = numpy.random.uniform(
          size=(batch_size, in_channels, h, w)
      ).astype(numpy.float32)
  
      out_h = utils.conv.get_conv_outsize(h, kh, sy, ph)
      out_w = utils.conv.get_conv_outsize(w, kw, sx, pw)
      self.offset = numpy.zeros(
          (batch_size, 2 * kh * kw, out_h, out_w), dtype=numpy.float32
      )
  
imports: import unittest
  import numpy
  import chainer
  from chainer import cuda
  from chainer.functions import convolution_2d
  from chainer.functions import deformable_convolution_2d_sampler
  from chainer import utils
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 1 for calling the TestDeformableConvolution2DSamplerFunctionZeroOffset obj's underlying member method code with example usage: obj.setUp() without return types