code: public static MonthDay randomMonthDay(MonthDay startInclusive, MonthDay endExclusive) {
      return randomMonthDay(startInclusive, endExclusive, Year.now().isLeap());
    }
docs: Returns a random {@link MonthDay} within the specified range. Includes leap day if the current
  year is a leap year.
  
  @param startInclusive the earliest {@link MonthDay} that can be returned
  @param endExclusive the upper bound (not included)
  @return the random {@link MonthDay}
  @throws IllegalArgumentException if startInclusive or endExclusive are null or if endExclusive
  is earlier than startInclusive