Pap_Tracking_Request::getForcedAffiliateId PHP Method

        public function getForcedAffiliateId()
        {
            return $this->getRequestParameter(self::getForcedAffiliateParamName());
        }

 private function isClickRequest(Pap_Tracking_Request $request) {
     return ($request->getAffiliateId() != '' || $request->getForcedAffiliateId() != '');
 }