Method pushDuration

base/src/main/java/net/time4j/PrettyTime.java:1753–1788

(
        long[] values,
        Duration<?> duration,
        TimeSource<?> refClock,
        boolean weekToDays
    )

    }

    private static void pushDuration(
        long[] values,
        Duration<?> duration,
        TimeSource<?> refClock,
        boolean weekToDays
    ) {
        int len = duration.getTotalLength().size();

        for (int i = 0; i < len; i++) {
            TimeSpan.Item<? extends IsoUnit> item =
                duration.getTotalLength().get(i);
            IsoUnit unit = item.getUnit();
            long amount = item.getAmount();

            if (unit instanceof CalendarUnit) {
                push(values, CalendarUnit.class.cast(unit), amount, weekToDays);
            } else if (unit instanceof ClockUnit) {
                push(values, ClockUnit.class.cast(unit), amount);
            } else if (unit instanceof OverflowUnit) {
                push(
                    values,
                    OverflowUnit.class.cast(unit).getCalendarUnit(),
                    amount,
                    weekToDays);
            } else if (unit.equals(CalendarUnit.weekBasedYears())) {
                values[0] = MathUtils.safeAdd(amount, values[0]); // YEARS
            } else { // approximated duration by normalization without nanos
                Moment unix = Moment.from(refClock.currentTime());
                PlainTimestamp start = unix.toZonalTimestamp(ZonalOffset.UTC);
                PlainTimestamp end = start.plus(amount, unit);
                IsoUnit[] units = (weekToDays ? TSP_UNITS : STD_UNITS);
                Duration<?> part = Duration.in(units).between(start, end);
                pushDuration(values, part, refClock, weekToDays);
            }
        }
    }

    private static void push(
        long[] values,