firefly-iii/app/Support/Calendar/Periodicity/Interval.php

<?php

/*
 * Interval.php
 * Copyright (c) 2023 Antonio Spinelli <https://github.com/tonicospinelli>
 *
 * This file is part of Firefly III (https://github.com/firefly-iii).
 *
 * 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 <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Support\Calendar\Periodicity;

/**
 * Class Interval
 */
abstract class Interval implements Interspacable
{
    public const int INTERVAL = 1;

    final public function skip(int $skip): int
    {
        return static::INTERVAL * $skip;
    }
}