public static Calendar addSeconds(Calendar origin, int value) {
        Calendar cal = sync((Calendar) origin.clone());
        cal.add(Calendar.SECOND, value);
        return sync(cal);
    }
public static Calendar addSeconds ( Calendar origin , int value ) { Calendar cal = sync ( ( Calendar ) origin . clone ( ) ) ; cal . add ( Calendar . SECOND , value ) ; return sync ( cal ) ; }
Add/Subtract the specified amount of seconds to the given {@link Calendar}.

<p>
The returned {@link Calendar} has its fields synced.
</p>

@param origin
@param value
@return
@since 0.9.2