presto-main/src/main/java/io/prestosql/operator/aggregation/MaxDataSizeForStats.java/MaxDataSizeForStats/output
class MaxDataSizeForStats:    @OutputFunction(StandardTypes.BIGINT)
    public static void output(@AggregationState NullableLongState state, BlockBuilder out)
    {
        NullableLongState.write(BigintType.BIGINT, state, out);
    }