Method headSet

output/java_guava/1.4.18/Maps.java:3827–3830

(K toElement, boolean inclusive)

    }

    @Override
    public NavigableSet<K> headSet(K toElement, boolean inclusive) {
      return map().headMap(toElement, inclusive).navigableKeySet();
    }

    @Override
    public NavigableSet<K> tailSet(K fromElement, boolean inclusive) {