presto-parser/src/main/java/io/prestosql/sql/QueryUtil.java/QueryUtil/aliased
class QueryUtil:    public static Relation aliased(Relation relation, String alias, List<String> columnAliases)
    {
        return new AliasedRelation(
                relation,
                identifier(alias),
                columnAliases.stream()
                        .map(QueryUtil::identifier)
                        .collect(Collectors.toList()));
    }