class ExtremeSpreadOptionDefinition extends OptionDefinition {

  public double getTimeFromPeriodEnd(final ZonedDateTime date) {
    Validate.notNull(date, "date");
    return DateUtils.getDifferenceInYears(_periodEnd.getExpiry(), date);
  }

  public  ExtremeSpreadOptionDefinition(final Expiry expiry, final boolean isCall, final Expiry periodEnd, final boolean isReverse);

}