code: def generate_inputs(self):
      return (
          pooling_nd_helper.shuffled_linspace((2, 3, 4, 3), self.dtype),
      )
  
imports: import unittest
  import numpy
  import six
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import testing
  from chainer.testing import attr
  from chainer.testing import backend
  from chainer_tests.functions_tests.pooling_tests import pooling_nd_helper
label_desc: Use image node_id 2 for calling the TestMaxPooling2D obj's underlying member method code with example usage: obj.generate_inputs() and returns: pooling_nd_helper