public function equals(Pap_Tracking_Cookie_ClickData $clickData) { 
     return (
     $this->getBannerId() == $clickData->getBannerId() &&
     $this->getChannelId() == $clickData->getChannelId() &&
     $this->getTimestamp() == $clickData->getTimestamp());
 }
 protected function getDateVisit(Pap_Tracking_Cookie_ClickData $clickCookie) {
     if ($clickCookie->getTimestamp() != null) {
         return Gpf_Common_DateUtils::getDateTime($clickCookie->getTimestamp());
     }
     
     if ($this->lastClickCookie->getTimestamp() != null) {
         return Gpf_Common_DateUtils::getDateTime($this->lastClickCookie->getTimestamp());
     }
     
     return Gpf_Common_DateUtils::now();
 }