presto-main/src/main/java/io/prestosql/sql/planner/planprinter/IoPlanPrinter.java/EstimatedStatsAndCost/hashCode
class EstimatedStatsAndCost:        @Override
        public int hashCode()
        {
            return Objects.hash(outputRowCount, outputSizeInBytes, cpuCost, maxMemory, networkCost);
        }