code: def create_link(self, initializers):
      initialW, initial_bias = initializers
  
      link = links.Convolution2D(
          self.in_channels,
          self.out_channels,
          self.ksize,
          stride=self.stride,
          pad=self.pad,
          initialW=initialW,
          initial_bias=initial_bias,
      )
  
      return link
  
imports: import unittest
  import numpy
  import pytest
  import six.moves.cPickle
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import links
  from chainer import memory_layouts
  from chainer import testing
  from chainer.testing import attr
  from chainer.utils import conv
label_desc: Use image node_id 4 for calling the TestConvolution2D obj's underlying member method code with example usage: obj.create_link(initializers) and returns: link