code: def test(self, verify_fn):
      num_repeats = 4
      num_outputs = num_repeats * 2
      verify_fn(
          self, lambda: self._build_dataset(num_repeats), num_outputs
      )
  
imports: import os
  from absl.testing import parameterized
  import sqlite3
  from tensorflow.python.data.experimental.ops import readers
  from tensorflow.python.data.kernel_tests import checkpoint_test_base
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import dtypes
  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 SqlDatasetCheckpointTest obj's underlying member method code with example usage: obj.test(verify_fn) without return types