* the head of the list.
   */

  /** Returns the time that this entry was last accessed, in ns. */
  @SuppressWarnings("GoodTime")
  long getAccessTime();

  /** Sets the entry access time in ns. */
  @SuppressWarnings("GoodTime") // b/122668874
  void setAccessTime(long time);

  /** Returns the next entry in the access queue. */

      // TODO(fry): when we link values instead of entries this method can go
      // away, as can connectAccessOrder, nullifyAccessOrder.
      newEntry.setAccessTime(original.getAccessTime());

      connectAccessOrder(original.getPreviousInAccessQueue(), newEntry);
      connectAccessOrder(newEntry, original.getNextInAccessQueue());

      nullifyAccessOrder(original);
    }

    }

    for (Segment<K, V> segment : map.segments) {
      long lastAccessTime = 0;
      long lastWriteTime = 0;
      for (ReferenceEntry<K, V> e : segment.recencyQueue) {
        long accessTime = e.getAccessTime();
        assertTrue(accessTime >= lastAccessTime);
        lastAccessTime = accessTime;
        long writeTime = e.getWriteTime();
        assertTrue(writeTime >= lastWriteTime);

    }

    for (Segment<K, V> segment : map.segments) {
      long lastAccessTime = 0;
      long lastWriteTime = 0;
      for (ReferenceEntry<K, V> e : segment.recencyQueue) {
        long accessTime = e.getAccessTime();
        assertTrue(accessTime >= lastAccessTime);
        lastAccessTime = accessTime;
        long writeTime = e.getWriteTime();
        assertTrue(writeTime >= lastWriteTime);