presto-main/src/main/java/io/prestosql/cost/SimpleFilterProjectSemiJoinStatsRule.java/SimpleFilterProjectSemiJoinStatsRule/SimpleFilterProjectSemiJoinStatsRule
class SimpleFilterProjectSemiJoinStatsRule:    public SimpleFilterProjectSemiJoinStatsRule(Metadata metadata, StatsNormalizer normalizer, FilterStatsCalculator filterStatsCalculator)
    {
        super(normalizer);
        this.metadata = requireNonNull(metadata, "metadata is null");
        this.filterStatsCalculator = requireNonNull(filterStatsCalculator, "filterStatsCalculator can not be null");
    }