public static Expression millisToZone(String expression, String timeZoneName, String format) {
        return millisToZone(x(expression), timeZoneName, format);
    }
public static Expression millisToZone ( String expression , String timeZoneName , String format ) { return millisToZone ( x ( expression ) , timeZoneName , format ) ; }
Returned expression results in a convertion of the UNIX time stamp to a string in the named time zone.