code: public static Integer getRemainingDayOfSeason(Date date) {
  
          if (date == null)
              return null;
  
          return getDayNumOfSeason(date) - getDayOfSeason(date);
      }
docs: 获取季度剩余的天数
  @param date 时间({@link Date})
  @return 天数，如果date is null，将返回null