public function getLinkURL($field)
    {
        $link_attr = self::decodeLinkObject($this->get($field));

        if(!is_object($link_attr)) {
            return $this->get($field);
        }
        if(!(strlen($link_attr->href) && strlen($link_attr->title) && strlen($link_attr->target))) {
            $field_attribs = $this->getField($field);
            if (array_key_exists('default', $field_attribs)) return $field_attribs['default'];
        }
        return $link_attr->href;
    }