chamilo-lms2/vendor/gedmo/doctrine-extensions/lib/Gedmo/Mapping/Annotation/ReferenceOne.php

<?php

namespace Gedmo\Mapping\Annotation;

use Doctrine\Common\Annotations\Annotation;

/**
 * Reference annotation for ORM -> ODM references extension
 * to be user like @ReferenceOne(type="entity", class="MyEntity", identifier="entity_id")
 *
 * @author Bulat Shakirzyanov <mallluhuct@gmail.com>
 * @license MIT License (http://www.opensource.org/licenses/mit-license.php)
 * @Annotation
 */
class ReferenceOne extends Reference
{
}