/**
  *
  * @param $clickData
  * @return Pap_Tracking_Cookie_ClickData
  */
 protected function getClickCookie(Pap_Tracking_Cookie_ClickData $clickData) {
 	try {
     	if ($this->isClickDataValid($clickData->getClick()->getUserId(), $clickData->getClick()->getCampaignId())) {
     		return $clickData;
     	}
 	} catch (Gpf_Exception $e) {
 	}
     return null;
 }