Method subSet

corpus/java/training/guava/collect/Sets.java:1663–1667

(
        E fromElement, boolean fromInclusive, E toElement, boolean toInclusive)

    }

    @Override
    public NavigableSet<E> subSet(
        E fromElement, boolean fromInclusive, E toElement, boolean toInclusive) {
      return forward.subSet(toElement, toInclusive, fromElement, fromInclusive).descendingSet();
    }

    @Override
    public NavigableSet<E> headSet(E toElement, boolean inclusive) {