protected function toSourceType(entry $entry)
 {
     if (!$this->sourceType) {
         $partner = PartnerPeer::retrieveByPK(kCurrentContext::getCurrentPartnerId());
         if ($partner) {
             $this->sourceType = kPluginableEnumsManager::coreToApi('EntrySourceType', $partner->getDefaultLiveStreamEntrySourceType());
         }
     }
     return parent::toSourceType($entry);
 }