presto-main/src/main/java/io/prestosql/cost/PlanNodeStatsEstimate.java/PlanNodeStatsEstimate/mapOutputRowCount
class PlanNodeStatsEstimate:    public PlanNodeStatsEstimate mapOutputRowCount(Function<Double, Double> mappingFunction)
    {
        return buildFrom(this).setOutputRowCount(mappingFunction.apply(outputRowCount)).build();
    }