docs: public Weeks toStandardWeeks() {
          checkYearsAndMonths("Weeks");
          long millis = getMillis();  // assign to a long
          millis += ((long) getSeconds()) * DateTimeConstants.MILLIS_PER_SECOND;
          millis += ((long) getMinutes()) * DateTimeConstants.MILLIS_PER_MINUTE;
          millis += ((long) getHours()) * DateTimeConstants.MILLIS_PER_HOUR;
          millis += ((long) getDays()) * DateTimeConstants.MILLIS_PER_DAY;
          long weeks = ((long) getWeeks()) + millis / DateTimeConstants.MILLIS_PER_WEEK;
          return Weeks.weeks(FieldUtils.safeToInt(weeks));
      }