private static final long serialVersionUID = 1;

    Object writeReplace() {
      return new ManualSerializationProxy<>(localCache);
    }

    private void readObject(ObjectInputStream in) throws InvalidObjectException {
      throw new InvalidObjectException("Use ManualSerializationProxy");
    }
  }

  static class LocalLoadingCache<K, V> extends LocalManualCache<K, V>

    private static final long serialVersionUID = 1;

    Object writeReplace() {
      return new ManualSerializationProxy<>(localCache);
    }

    private void readObject(ObjectInputStream in) throws InvalidObjectException {
      throw new InvalidObjectException("Use ManualSerializationProxy");
    }
  }

  static class LocalLoadingCache<K, V> extends LocalManualCache<K, V>