presto-parser/src/main/java/io/prestosql/sql/tree/Select.java/Select/Select
class Select:    private Select(Optional<NodeLocation> location, boolean distinct, List<SelectItem> selectItems)
    {
        super(location);
        this.distinct = distinct;
        this.selectItems = ImmutableList.copyOf(requireNonNull(selectItems, "selectItems"));
    }