code: def testMaxPool(self):
      self._TestPooling(
          nn_ops.max_pool,
          gen_nn_ops.max_pool_grad,
          pool_grad_grad_func=gen_nn_ops.max_pool_grad_grad,
      )
  
imports: import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import gen_nn_ops
  from tensorflow.python.ops import nn_ops
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 4 for calling the PoolGradTest obj's underlying member method code with example usage: obj.testMaxPool() without return types