MappingException.php

1. 8.x drupal/core/vendor/symfony/validator/Symfony/Component/Validator/Exception/MappingException.php
2. 8.x drupal/core/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/MappingException.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\Exception;

class MappingException extends ValidatorException {

}