public function setUrl($url)
{
// redefine var
$url = (string) $url;
// if link doesn't start with http, we prepend the URL of the site
if (mb_substr($url, 0, 7) != 'http://') {
$url = SITE_URL . $url;
}
$url = FrontendModel::addURLParameters($url, $this->utm);
$url = htmlspecialchars_decode($url);
// call parent
parent::setURL($url);
}