presto-main/src/main/java/io/prestosql/cost/SpatialJoinStatsRule.java/SpatialJoinStatsRule/SpatialJoinStatsRule
class SpatialJoinStatsRule:    public SpatialJoinStatsRule(FilterStatsCalculator statsCalculator, StatsNormalizer normalizer)
    {
        super(normalizer);
        this.statsCalculator = requireNonNull(statsCalculator, "statsCalculator is null");
    }