presto-main/src/main/java/io/prestosql/sql/planner/StatisticsAggregationPlanner.java/ColumnStatisticsAggregation/ColumnStatisticsAggregation
class ColumnStatisticsAggregation:        private ColumnStatisticsAggregation(AggregationNode.Aggregation aggregation, Type outputType)
        {
            this.aggregation = requireNonNull(aggregation, "aggregation is null");
            this.outputType = requireNonNull(outputType, "outputType is null");
        }