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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2023 Apryse Group NV
    Authors: Apryse Software.

    This program is offered under a commercial and under the AGPL license.
    For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

    AGPL licensing:
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see .
 */
package com.itextpdf.commons.actions.sequence;

import java.util.concurrent.atomic.AtomicLong;

/**
 * The class represents unique numeric identifier with autoincrement strategy of generation.
 */
public final class SequenceId {
    private static final AtomicLong ID_GENERATOR = new AtomicLong();

    private final long id;

    /**
     * Creates a new instance of identifier.
     */
    public SequenceId() {
        this.id = ID_GENERATOR.incrementAndGet();
    }

    /**
     * Obtains an id.
     *
     * @return id
     */
    public long getId() {
        return id;
    }
}