final DayCounter fraDayCounter = euribor3m.currentLink().dayCounter();
final BusinessDayConvention convention = euribor3m.currentLink().businessDayConvention();
final boolean endOfMonth = euribor3m.currentLink().endOfMonth();
final RateHelper fra1x4 = new FraRateHelper(h1x4, 1, 4, fixingDays, calendar, convention, endOfMonth, fraDayCounter);
final RateHelper fra2x5 = new FraRateHelper(h2x5, 2, 5, fixingDays, calendar, convention, endOfMonth, fraDayCounter);
final RateHelper fra3x6 = new FraRateHelper(h3x6, 3, 6, fixingDays, calendar, convention, endOfMonth, fraDayCounter);
final RateHelper fra6x9 = new FraRateHelper(h6x9, 6, 9, fixingDays, calendar, convention, endOfMonth, fraDayCounter);
final RateHelper fra9x12 = new FraRateHelper(h9x12, 9, 12, fixingDays, calendar, convention, endOfMonth, fraDayCounter);
/*********************
** CURVE BUILDING **
*********************/