presto-main/src/main/java/io/prestosql/cost/PlanNodeStatsEstimateMath.java/PlanNodeStatsEstimateMath/addStatsAndCollapseDistinctValues
class PlanNodeStatsEstimateMath:    public static PlanNodeStatsEstimate addStatsAndCollapseDistinctValues(PlanNodeStatsEstimate left, PlanNodeStatsEstimate right)
    {
        return addStats(left, right, StatisticRange::addAndCollapseDistinctValues);
    }