presto-main/src/main/java/io/prestosql/cost/JoinStatsRule.java/JoinStatsRule/JoinStatsRule
class JoinStatsRule:    @VisibleForTesting
    JoinStatsRule(FilterStatsCalculator filterStatsCalculator, StatsNormalizer normalizer, double unmatchedJoinComplementNdvsCoefficient)
    {
        super(normalizer);
        this.filterStatsCalculator = requireNonNull(filterStatsCalculator, "filterStatsCalculator is null");
        this.normalizer = normalizer;
        this.unmatchedJoinComplementNdvsCoefficient = unmatchedJoinComplementNdvsCoefficient;
    }