code: def testPaddingForRaggedDimensionHelper(
      self,
      descr,
      data,
      axis,
      expected,
      pad_value=None,
      ragged_rank=None,
  ):
      data = self._convert_ragged(data, ragged_rank)
      pad_value = self._convert_ragged(
          pad_value, data.ragged_rank - axis
      )
      pad = pad_along_dimension_op._padding_for_dimension(
          data, axis, pad_value
      )
  
      self.assertAllEqual(pad, expected)
      self.assertEqual(data.shape.ndims, pad.shape.ndims)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.ops.ragged import ragged_tensor
  from tensorflow.python.platform import test
  from tensorflow_text.python.ops import pad_along_dimension_op
label_desc: Use image node_id 16 for calling the PadAlongDimensionOpTest obj's underlying member method code with example usage: obj.testPaddingForRaggedDimensionHelper(descr, data, axis, expected, pad_value, ragged_rank) without return types