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Netty 4 based transport implementation

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/*
 * 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.http.netty4;

/**
 * Super-interface for responses handled by the Netty4 HTTP transport.
 */
sealed interface Netty4HttpResponse permits Netty4FullHttpResponse, Netty4ChunkedHttpResponse, Netty4ChunkedHttpContinuation {
    /**
     * @return The sequence number for the request which corresponds with this response, for making sure that we send responses to pipelined
     * requests in the correct order.
     */
    int getSequence();
}