static void rollToNextWeekStart(DTBuilder builder, Weekday wkst) {
        DateValue bd = builder.toDate();
        builder.day += (7 - ((7 + (Weekday.valueOf(bd).javaDayNum
                - wkst.javaDayNum))
                % 7)) % 7;
        builder.normalize();
    }
static void rollToNextWeekStart ( DTBuilder builder , Weekday wkst ) { DateValue bd = builder . toDate ( ) ; builder . day += ( 7 - ( ( 7 + ( Weekday . valueOf ( bd ) . javaDayNum - wkst . javaDayNum ) ) % 7 ) ) % 7 ; builder . normalize ( ) ; }
advances builder to the earliest day on or after builder that falls on
wkst.
@param builder non null.
@param wkst the day of the week that the week starts on