code: def test(self, verify_fn):
      components = np.random.randint(5, size=(40,)).astype(np.int32)
  
      num_outputs = len(components) // 4
      verify_fn(
          self, lambda: self._build_dataset(components), num_outputs
      )
  
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 2 for calling the DenseToSparseBatchCheckpointTest obj's underlying member method code with example usage: obj.test(verify_fn) without return types