Doctrine\ODM\PHPCR\Mapping\Driver\XmlDriver::addReferenceMapping PHP Метод

    private function addReferenceMapping(ClassMetadata $class, $reference, $type)
    {
        /** @var $class \Doctrine\ODM\PHPCR\Mapping\ClassMetadata */
        $attributes = (array) $reference->attributes();
        $mapping = $attributes["@attributes"];
        $mapping['strategy'] = isset($mapping['strategy']) ? strtolower($mapping['strategy']) : null;
        $mapping['targetDocument'] = isset($mapping['target-document']) ? $mapping['target-document'] : null;
        unset($mapping['target-document']);
        if ($type === 'many') {
            $class->mapManyToMany($mapping);
        } elseif ($type === 'one') {
            $class->mapManyToOne($mapping);
        }
    }