presto-main/src/main/java/io/prestosql/sql/gen/JoinCompiler.java/JoinCompiler/PagesHashStrategyFactory
class JoinCompiler:        public PagesHashStrategyFactory(Class<? extends PagesHashStrategy> pagesHashStrategyClass)
        {
            try {
                constructor = pagesHashStrategyClass.getConstructor(List.class, OptionalInt.class);
            }
            catch (NoSuchMethodException e) {
                throw new RuntimeException(e);
            }
        }