Method ofCalendarUnits

base/src/main/java/net/time4j/Duration.java:497–519

(
        int years,
        int months,
        int days
    )

     * @see     #inverse()
     */
    public static Duration<CalendarUnit> ofCalendarUnits(
        int years,
        int months,
        int days
    ) {

        List<Item<CalendarUnit>> items = new ArrayList<>(3);

        if (years != 0) {
            items.add(Item.of(years, YEARS));
        }

        if (months != 0) {
            items.add(Item.of(months, MONTHS));
        }

        if (days != 0) {
            items.add(Item.of(days, DAYS));
        }

        return new Duration<>(items, false);

    }

    /**
     * <p>Creates a positive duratioon in hours, minutes and seconds. </p>