code: def create_input_array(self, xp):
      x_shape = (self.batch, self.height, self.width, self.in_channels)
      x = xp.ones(x_shape, self.dtype)
      return x
  
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 2 for calling the Convolution2DMemoryLayoutsTestBase obj's underlying member method code with example usage: obj.create_input_array(xp) and returns: x