presto-main/src/main/java/io/prestosql/cost/StatsAndCosts.java/StatsAndCosts/create
class StatsAndCosts:    public static StatsAndCosts create(StageInfo stageInfo)
    {
        ImmutableMap.Builder<PlanNodeId, PlanNodeStatsEstimate> planNodeStats = ImmutableMap.builder();
        ImmutableMap.Builder<PlanNodeId, PlanCostEstimate> planNodeCosts = ImmutableMap.builder();
        reconstructStatsAndCosts(stageInfo, planNodeStats, planNodeCosts);
        return new StatsAndCosts(planNodeStats.build(), planNodeCosts.build());
    }