code: def testDilationGrad(self, dtype):
      for use_gpu in True, False:
          self._testDilationGradDeterminismError(use_gpu, dtype)
          self._testDilationGradValidPadding_1x1x1(use_gpu, dtype)
          self._testDilationGradSamePadding_1x1x1(use_gpu, dtype)
          self._testDilationGradSamePadding_1x1x2(use_gpu, dtype)
          self._testDilationGradValidPadding_2x2x1(use_gpu, dtype)
          self._testDilationGradSamePadding_2x2x1(use_gpu, dtype)
          self._testDilationGradSamePaddingBatch_2x2x1(use_gpu, dtype)
          self._testDilationGradSamePadding_2x2x4(use_gpu, dtype)
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.framework import config
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import gradient_checker_v2
  from tensorflow.python.ops import nn_ops
  import tensorflow.python.ops.nn_grad
  from tensorflow.python.platform import test
label_desc: Use image node_id 19 for calling the DilationTest obj's underlying member method code with example usage: obj.testDilationGrad(dtype) without return types