docs: public static Hours hoursBetween(ReadablePartial start, ReadablePartial end) {
          if (start instanceof LocalTime && end instanceof LocalTime)   {
              Chronology chrono = DateTimeUtils.getChronology(start.getChronology());
              int hours = chrono.hours().getDifference(
                      ((LocalTime) end).getLocalMillis(), ((LocalTime) start).getLocalMillis());
              return Hours.hours(hours);
          }
          int amount = BaseSingleFieldPeriod.between(start, end, ZERO);
          return Hours.hours(amount);
      }