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HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support

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/*
 * Copyright 2018 dc-square and the HiveMQ MQTT Client Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.hivemq.client.mqtt.mqtt5.message.publish;

import com.hivemq.client.annotations.DoNotImplement;
import com.hivemq.client.internal.mqtt.message.publish.MqttPublishBuilder;
import org.jetbrains.annotations.NotNull;

/**
 * MQTT 5 Will Publish which can be a part of a {@link com.hivemq.client.mqtt.mqtt5.message.connect.Mqtt5Connect Connect
 * message}.
 *
 * @author Silvio Giebl
 * @since 1.0
 */
@DoNotImplement
public interface Mqtt5WillPublish extends Mqtt5Publish {

    /**
     * The default delay of Will Publishes.
     */
    long DEFAULT_DELAY_INTERVAL = 0;

    /**
     * Creates a builder for a Will Publish.
     *
     * @return the created builder.
     */
    static @NotNull Mqtt5WillPublishBuilder builder() {
        return new MqttPublishBuilder.WillDefault();
    }

    /**
     * @return the delay of this Will Publish. The default is {@link #DEFAULT_DELAY_INTERVAL}.
     */
    long getDelayInterval();

    /**
     * Creates a builder for extending this Will Publish.
     *
     * @return the created builder.
     */
    @NotNull Mqtt5WillPublishBuilder.Complete extendAsWill();
}