code: public void seekToHoliday(String holidayString, String direction, String seekAmount) {
      Holiday holiday = Holiday.valueOf(holidayString);
      assert(holiday != null);
      
      seekToIcsEvent(HOLIDAY_ICS_FILE, holiday.getSummary(), direction, seekAmount);
    }
docs: Seeks forward or backwards to a particular holiday based on the current date
  
  @param holidayString The holiday to seek to
  @param direction     The direction to seek
  @param seekAmount    The number of years to seek