private function clearWebcode($em, $articleNumber, $articleLanguage)
{
$webcode = $em->getRepository('Newscoop\\Entity\\Webcode')->createQueryBuilder('w')->leftJoin('w.article', 'a')->where('a.number = :number')->andWhere('a.language = :language')->setParameter('number', $articleNumber)->setParameter('language', $articleLanguage)->getQuery()->getOneOrNullResult();
if ($webcode) {
$em->remove($webcode);
$em->flush();
}
}