.isWithin(ALLOWED_ERROR)
        .of(TWO_VALUES_SUM_OF_PRODUCTS_OF_DELTAS / 2);
    assertThat(twoValuesAccumulatorByAddAllPartitionedPairedStats.populationCovariance())
        .isWithin(ALLOWED_ERROR)
        .of(TWO_VALUES_SUM_OF_PRODUCTS_OF_DELTAS / 2);
    assertThat(manyValuesAccumulator.populationCovariance())
        .isWithin(ALLOWED_ERROR)
        .of(MANY_VALUES_SUM_OF_PRODUCTS_OF_DELTAS / MANY_VALUES_COUNT);

        .isWithin(ALLOWED_ERROR)
        .of(TWO_VALUES_SUM_OF_PRODUCTS_OF_DELTAS / 2);
    assertThat(twoValuesAccumulatorByAddAllPartitionedPairedStats.populationCovariance())
        .isWithin(ALLOWED_ERROR)
        .of(TWO_VALUES_SUM_OF_PRODUCTS_OF_DELTAS / 2);
    assertThat(manyValuesAccumulator.populationCovariance())
        .isWithin(ALLOWED_ERROR)
        .of(MANY_VALUES_SUM_OF_PRODUCTS_OF_DELTAS / MANY_VALUES_COUNT);

  public void testSum() {
    assertThat(emptyAccumulator.sum()).isWithin(0.0).of(0.0);
    assertThat(emptyAccumulatorByAddAllEmptyIterable.sum()).isWithin(0.0).of(0.0);
    assertThat(emptyAccumulatorByAddAllEmptyStats.sum()).isWithin(0.0).of(0.0);
    assertThat(oneValueAccumulator.sum()).isWithin(ALLOWED_ERROR).of(ONE_VALUE);
    assertThat(oneValueAccumulatorByAddAllEmptyStats.sum()).isWithin(ALLOWED_ERROR).of(ONE_VALUE);

  }

  public void testSum() {
    assertThat(EMPTY_STATS_VARARGS.sum()).isEqualTo(0.0);
    assertThat(EMPTY_STATS_ITERABLE.sum()).isEqualTo(0.0);
    assertThat(ONE_VALUE_STATS.sum()).isWithin(ALLOWED_ERROR).of(ONE_VALUE);
    assertThat(TWO_VALUES_STATS.sum()).isWithin(ALLOWED_ERROR).of(TWO_VALUES_MEAN * 2);
    assertThat(MANY_VALUES_STATS_VARARGS.sum())
        .isWithin(ALLOWED_ERROR)

  public void testSum() {
    assertThat(emptyAccumulator.sum()).isWithin(0.0).of(0.0);
    assertThat(emptyAccumulatorByAddAllEmptyIterable.sum()).isWithin(0.0).of(0.0);
    assertThat(emptyAccumulatorByAddAllEmptyStats.sum()).isWithin(0.0).of(0.0);
    assertThat(oneValueAccumulator.sum()).isWithin(ALLOWED_ERROR).of(ONE_VALUE);
    assertThat(oneValueAccumulatorByAddAllEmptyStats.sum()).isWithin(ALLOWED_ERROR).of(ONE_VALUE);

  }

  public void testSum() {
    assertThat(EMPTY_STATS_VARARGS.sum()).isEqualTo(0.0);
    assertThat(EMPTY_STATS_ITERABLE.sum()).isEqualTo(0.0);
    assertThat(ONE_VALUE_STATS.sum()).isWithin(ALLOWED_ERROR).of(ONE_VALUE);
    assertThat(TWO_VALUES_STATS.sum()).isWithin(ALLOWED_ERROR).of(TWO_VALUES_MEAN * 2);
    assertThat(MANY_VALUES_STATS_VARARGS.sum())
        .isWithin(ALLOWED_ERROR)

            opLambda.callback(builder);
        }
    }

    public void setBoost_Sum() {
        setBoost_Sum(null);
    }

    public void setBoost_Sum(ConditionOptionCall<SumAggregationBuilder> opLambda) {
        setBoost_Sum("boost", opLambda);
    }

    public void setBoost_Sum(String name, ConditionOptionCall<SumAggregationBuilder> opLambda) {

    Collector<Cell<String, String, Integer>, ?, ImmutableTable<String, String, Integer>> collector =
        TableCollectors.toImmutableTable(
            Cell::getRowKey, Cell::getColumnKey, Cell::getValue, Integer::sum);
    BiPredicate<ImmutableTable<String, String, Integer>, ImmutableTable<String, String, Integer>>
        equivalence = pairwiseOnResultOf(ImmutableTable::cellSet);
    CollectorTester.of(collector, equivalence)

            opLambda.callback(builder);
        }
    }

    public void setCreatedTime_Sum() {
        setCreatedTime_Sum(null);
    }

    public void setCreatedTime_Sum(ConditionOptionCall<SumAggregationBuilder> opLambda) {
        setCreatedTime_Sum("createdTime", opLambda);
    }

    public void setCreatedTime_Sum(String name, ConditionOptionCall<SumAggregationBuilder> opLambda) {

            opLambda.callback(builder);
        }
    }

    public void setCreatedTime_Sum() {
        setCreatedTime_Sum(null);
    }

    public void setCreatedTime_Sum(ConditionOptionCall<SumAggregationBuilder> opLambda) {
        setCreatedTime_Sum("createdTime", opLambda);
    }

    public void setCreatedTime_Sum(String name, ConditionOptionCall<SumAggregationBuilder> opLambda) {