private function addUrls($entities, $locale)
{
$ids = array_filter(array_column($entities, 'id'));
$apiEntities = $this->getMediaManager()->getByIds($ids, $locale);
$i = 0;
foreach ($entities as $key => $entity) {
$entities[$key]['url'] = $apiEntities[$i]->getUrl();
$i += 1;
}
return $entities;
}