code: def _build_dataset(self, components):
      return (
          dataset_ops.Dataset.from_tensor_slices(components)
          .map(lambda x: array_ops.fill([x], x))
          .apply(batching.dense_to_sparse_batch(4, [12]))
      )
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.data.experimental.ops import batching
  from tensorflow.python.data.kernel_tests import checkpoint_test_base
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import errors
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the DenseToSparseBatchCheckpointTest obj's underlying member method code with example usage: obj._build_dataset(components) and returns: dataset_ops