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

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