presto-main/src/main/java/io/prestosql/sql/planner/planprinter/PlanPrinter.java/Visitor/printStatisticAggregations
class Visitor:        private void printStatisticAggregations(NodeRepresentation nodeOutput, StatisticAggregations aggregations, StatisticAggregationsDescriptor<Symbol> descriptor)
        {
            nodeOutput.appendDetailsLine("Collected statistics:");
            printStatisticAggregationsInfo(nodeOutput, descriptor.getTableStatistics(), descriptor.getColumnStatistics(), aggregations.getAggregations());
            nodeOutput.appendDetailsLine(indentString(1) + "grouped by => [%s]", getStatisticGroupingSetsInfo(descriptor.getGrouping()));
        }