public boolean isEmpty() {
      return head.getNextInAccessQueue() == head;
    }

    @Override
    public int size() {
      int size = 0;
      for (ReferenceEntry<K, V> e = head.getNextInAccessQueue();
          e != head;
          e = e.getNextInAccessQueue()) {
        size++;
      }
      return size;
    }

    @Override
    public void clear() {

    if (map.usesWriteQueue()) {
      assertSame(two, one.getNextInWriteQueue());
    }
    if (map.usesAccessQueue()) {
      assertSame(two, one.getNextInAccessQueue());
    }
  }

  public void testSegmentGetAndContains() {
    FakeTicker ticker = new FakeTicker();
    LocalCache<Object, Object> map =
        makeLocalCache(

    if (map.usesWriteQueue()) {
      assertSame(two, one.getNextInWriteQueue());
    }
    if (map.usesAccessQueue()) {
      assertSame(two, one.getNextInAccessQueue());
    }
  }

  public void testSegmentGetAndContains() {
    FakeTicker ticker = new FakeTicker();
    LocalCache<Object, Object> map =
        makeLocalCache(