public function isTracked(EntityManagerInterface $em, $entity)
    {
        $class       = get_class($entity);
        $annotations = $this->reader->getClassAnnotations($em->getClassMetadata($class)->getReflectionClass());

        foreach ($annotations as $annotation) {
            if ($annotation instanceof Tracked) {
                return true;
            }
        }

        return false;
    }