long accessTime = e.getAccessTime();
        assertTrue(accessTime >= lastAccessTime);
        lastAccessTime = accessTime;
        long writeTime = e.getWriteTime();
        assertTrue(writeTime >= lastWriteTime);
        lastWriteTime = writeTime;
      }

      lastAccessTime = 0;
      lastWriteTime = 0;
      for (ReferenceEntry<K, V> e : segment.accessQueue) {

		return
	}
	err = en.WriteString(z.Name)
	if err != nil {
		err = msgp.WrapError(err, "Name")
		return
	}
	err = en.WriteTime(z.Created)
	if err != nil {
		err = msgp.WrapError(err, "Created")
		return
	}
	err = en.WriteTime(z.Deleted)
	if err != nil {
		err = msgp.WrapError(err, "Deleted")
		return
	}
	return
}

// MarshalMsg implements msgp.Marshaler