/**
  * Perform update
  * @param type $a_content_id
  * @param type $course
  */
 protected function doUpdate($a_usr_id, ilECSEnrolmentStatus $status)
 {
     include_once './Services/WebServices/ECS/classes/class.ilECSImport.php';
     $obj_ids = ilECSImport::lookupObjIdsByContentId($status->getId());
     $obj_id = end($obj_ids);
     $ref_ids = ilObject::_getAllReferences($obj_id);
     $ref_id = end($ref_ids);
     if (!$ref_id) {
         // Remote object not found
         return TRUE;
     }
     switch ($status->getStatus()) {
         case ilECSEnrolmentStatus::STATUS_PENDING:
             // nothing todo in the moment: maybe send mail
             break;
         case ilECSEnrolmentStatus::STATUS_ACTIVE:
             $GLOBALS['ilLog']->write(__METHOD__ . ': Add desktop item: ' . $a_usr_id . ' ' . $ref_id . ' ' . $obj_id);
             ilObjUser::_addDesktopItem($a_usr_id, $ref_id, ilObject::_lookupType($obj_id));
             break;
         case ilECSEnrolmentStatus::STATUS_ACCOUNT_DEACTIVATED:
         case ilECSEnrolmentStatus::STATUS_DENIED:
         case ilECSEnrolmentStatus::STATUS_REJECTED:
         case ilECSEnrolmentStatus::STATUS_UNSUBSCRIBED:
             $GLOBALS['ilLog']->write(__METHOD__ . ': Remove desktop item: ' . $a_usr_id . ' ' . $ref_id . ' ' . $obj_id);
             ilObjUser::_dropDesktopItem($a_usr_id, $ref_id, ilObject::_lookupType($obj_id));
             break;
     }
     return TRUE;
 }