Method headSet

corpus/java/training/guava/collect/Maps.java:3764–3767

(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) {