Optional.php

1. 8.x drupal/core/vendor/symfony/validator/Symfony/Component/Validator/Constraints/Optional.php
2. 8.x drupal/core/vendor/symfony/validator/Symfony/Component/Validator/Constraints/Collection/Optional.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\Validator\Constraints\Collection;

use Symfony\Component\Validator\Constraints\Optional as BaseOptional;

/**
 * @Annotation
 *
 * @author Bernhard Schussek <bschussek@gmail.com>
 *
 * @deprecated Deprecated in 2.3, to be removed in 3.0. Use
 *             {@link \Symfony\Component\Validator\Constraints\Optional} instead.
 */
class Optional extends BaseOptional {

}