presto-main/src/main/java/io/prestosql/sql/planner/planprinter/WindowPlanNodeStats.java/WindowPlanNodeStats/mergeWith
class WindowPlanNodeStats:    @Override
    public PlanNodeStats mergeWith(PlanNodeStats other)
    {
        checkArgument(other instanceof WindowPlanNodeStats, "other is not an instanceof WindowPlanNodeStats");
        PlanNodeStats merged = super.mergeWith(other);

        return new WindowPlanNodeStats(
                merged.getPlanNodeId(),
                merged.getPlanNodeScheduledTime(),
                merged.getPlanNodeCpuTime(),
                merged.getPlanNodeInputPositions(),
                merged.getPlanNodeInputDataSize(),
                merged.getPlanNodeOutputPositions(),
                merged.getPlanNodeOutputDataSize(),
                merged.operatorInputStats,
                windowOperatorStats);
    }