Method fill

base/src/main/java/net/time4j/PlainDate.java:2089–2096

(
        Map<String, Object> map,
        ChronoElement<?> element
    )

    }

    private static void fill(
        Map<String, Object> map,
        ChronoElement<?> element
    ) {

        map.put(element.name(), element);

    }

    private static void formatYear(
        StringBuilder sb,