docs: protected static final LocalDate moveDate (final MoveableHoliday aMoveableHoliday, final LocalDate aFixed)
    {
      for (final MovingCondition aMoveCond : aMoveableHoliday.getMovingCondition ())
        if (shallBeMoved (aFixed, aMoveCond))
          return _moveDate (aMoveCond, aFixed);
      return aFixed;
    }