@SafeVarargs
    public final OptionalLong queryForLong(final String sql, final Object... parameters) {
        return query(sql, StatementSetter.DEFAULT, SINGLE_LONG_EXTRACTOR, null, parameters);
    }
@ SafeVarargs public final OptionalLong queryForLong ( final String sql , final Object ... parameters ) { return query ( sql , StatementSetter . DEFAULT , SINGLE_LONG_EXTRACTOR , null , parameters ) ; }
@see SQLExecutor#queryForSingleResult(Class, Connection, String, Object...).