presto-jdbc/src/main/java/io/prestosql/jdbc/PrestoStatement.java/PrestoStatement/setFetchSize
class PrestoStatement:    @Override
    public void setFetchSize(int rows)
            throws SQLException
    {
        checkOpen();
        if (rows < 0) {
            throw new SQLException("Fetch size must be positive");
        }
        fetchSize.set(rows);
    }