boon/src/main/java/org/boon/Maps.java
@Universal
    public static <K, V> V last( NavigableMap<K, V> map ) {
        return map.lastEntry().getValue()   ;
    }
@Universal
    public static <K, V> V last( NavigableMap<K, V> map ) {
        return map.lastEntry().getValue()   ;
    }
Grabs the last value from a tree map (Navigable map).