Method headSet

output/java_guava/1.4.19/Maps.java:3753–3756

(K toElement)

    }

    @Override
    public SortedSet<K> headSet(K toElement) {
      return new SortedKeySet<K, V>(map().headMap(toElement));
    }

    @Override
    public SortedSet<K> tailSet(K fromElement) {