kulakpos_web/vendor/sabberworm/php-css-parser/src/RuleSet/RuleContainer.php

<?php

declare(strict_types=1);

namespace Sabberworm\CSS\RuleSet;

use function Safe\class_alias;

if (!\class_exists(RuleContainer::class, false) && !\interface_exists(RuleContainer::class, false)) {
    /**
     * @deprecated in v9.2, will be removed in v10.0.  Use `DeclarationList` instead, which is a direct replacement.
     */
    class_alias(DeclarationList::class, RuleContainer::class);
}