connectWriteOrder(newEntry, original.getNextInWriteQueue());

      nullifyWriteOrder(original);
    }
  }

  /** A reference to a value. */
  interface ValueReference<K, V> {
    /** Returns the value. Does not block or throw exceptions. */
    @CheckForNull
    V get();

    /**

      connectWriteOrder(newEntry, original.getNextInWriteQueue());

      nullifyWriteOrder(original);
    }
  }

  /** A reference to a value. */
  interface ValueReference<K, V> {
    /** Returns the value. Does not block or throw exceptions. */
    @CheckForNull
    V get();

    /**