public function controllerActionPostdispatch(Varien_Event_Observer $observer)
    {
        if (!$this->_getHelper()->isActive()) {
            return;
        }
        
        /* @var $controllerAction Mage_Core_Controller_Front_Action */
        $controllerAction = $observer->getControllerAction();


        if (!Mage::app()->getStore()->isAdmin() 
            && $controllerAction->getResponse()->canSendHeaders(false)) {
            if (!$controllerAction->getRequest()->getHeader('X-Esi-Include')) {
                $this->_addCookies();
            }

            $this->_addResponseHeaders($controllerAction);
        }

        return $this;
    }