/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.cluster;

import org.elasticsearch.common.io.stream.Writeable;

/**
 * Cluster state part, changes in which can be serialized
 */
public interface Diffable<T> extends Writeable {

    /**
     * Returns serializable object representing differences between this and previousState
     */
    Diff<T> diff(T previousState);

}