presto-main/src/main/java/io/prestosql/operator/SortedPositionLinks.java/SortedPositionLinks/FactoryBuilder
class SortedPositionLinks:        public FactoryBuilder(int size, PagesHashStrategy pagesHashStrategy, LongArrayList addresses)
        {
            this.size = size;
            this.comparator = new PositionComparator(pagesHashStrategy, addresses);
            this.pagesHashStrategy = pagesHashStrategy;
            this.addresses = addresses;
            positionLinks = new Int2ObjectOpenHashMap<>();
        }