public function addSmartyTarget($display, $content, $default = false)
    {
        $target = new CNabuBuiltInSiteTarget();
        $target->setMIMETypeId('text/html')
               ->setOutputTypeHTML()
               ->setSmartyDisplayFile($display)
               ->setSmartyContentFile($content)
        ;

        return $this->addTarget($target, $default);
    }