code: def testWithStructuredElements(self):
      nrows = 20
      batch_size = 4
  
      def make_structure(x):
          return {
              "dense": array_ops.fill([x], x),
              "ragged": ragged_concat_ops.stack(
                  [
                      array_ops_stack.stack([x]),
                      array_ops_stack.stack([x, x]),
                  ]
              ),
              "sparse": sparse_tensor.SparseTensor([[x]], [x], [100]),
          }
  
      dataset = dataset_ops.Dataset.from_tensor_slices(np.arange(nrows))
      dataset = dataset.map(make_structure)
      dataset = dataset.ragged_batch(batch_size)
      get_next = self.getNext(dataset)
  
      for i in range(0, nrows, batch_size):
          result = self.evaluate(get_next())
          rows = range(i, i + batch_size)
          self.assertAllEqual(result["dense"], [[r] * r for r in rows])
          self.assertAllEqual(
              result["ragged"], [[[r], [r, r]] for r in rows]
          )
          self.assertAllEqual(
              result["sparse"].indices, list(enumerate(rows))
          )
          self.assertAllEqual(result["sparse"].values, rows)
          self.assertAllEqual(result["sparse"].dense_shape, [4, 100])
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.data.util import nest
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops.ragged import ragged_concat_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the RaggedBatchTest obj's underlying member method code with example usage: obj.testWithStructuredElements() and returns: dict