code: def test_aggregate_sketches_sum(
      self, sketches, epsilon, delta, size_lower_bound, size_upper_bound
  ):
      params = pipeline_dp.AggregateParams(
          noise_kind=pipeline_dp.NoiseKind.LAPLACE,
          metrics=[pipeline_dp.Metrics.SUM],
          max_partitions_contributed=1,
          max_contributions_per_partition=10,
          min_value=0,
          max_value=10,
      )
      budget_accountant = pipeline_dp.NaiveBudgetAccountant(
          total_epsilon=epsilon, total_delta=delta
      )
      dp_engine = peeker_engine.PeekerEngine(
          budget_accountant, self._pipeline_backend
      )
      dp_results = dp_engine.aggregate_sketches(sketches, params)
      budget_accountant.compute_budgets()
      dp_results = list(dp_results)
      self.assertLessEqual(len(dp_results), size_upper_bound)
      self.assertGreaterEqual(len(dp_results), size_lower_bound)
  
imports: from absl.testing import absltest
  from absl.testing import parameterized
  import pipeline_dp
  from utility_analysis import peeker_engine
label_desc: Use image node_id 2 for calling the PeekerDpEngineTest obj's underlying member method code with example usage: obj.test_aggregate_sketches_sum(sketches, epsilon, delta, size_lower_bound, size_upper_bound) without return types