/**
  * Handle recipient collection and return a numeric array
  *
  * @param RecipientCollection $recipientCollection
  * @param bool $limit
  *
  * @return array  List of recipients
  */
 private function handleRecipients(RecipientCollection $recipientCollection, $limit = false)
 {
     $list = array();
     /** @var Recipient $recipient */
     foreach ($recipientCollection->toArray() as $recipient) {
         $list[] = $recipient->getValue();
         if (count($list) >= $limit) {
             break;
         }
     }
     return $list;
 }