presto-parser/src/main/java/io/prestosql/sql/ReservedIdentifiers.java/ReservedIdentifiers/reservedIdentifiers
class ReservedIdentifiers:    public static Set<String> reservedIdentifiers()
    {
        return sqlKeywords().stream()
                .filter(ReservedIdentifiers::reserved)
                .sorted()
                .collect(toImmutableSet());
    }