presto-parser/src/main/java/io/prestosql/sql/ReservedIdentifiers.java/ReservedIdentifiers/reserved
class ReservedIdentifiers:    private static boolean reserved(String name)
    {
        try {
            return !(PARSER.createExpression(name) instanceof Identifier);
        }
        catch (ParsingException ignored) {
            return true;
        }
    }