public function getStaticContent($nb_site_static_content)
    {
        $nb_site_static_content_id = nb_getMixedValue($nb_site_static_content, 'nb_site_static_content_id');

        return (is_numeric($nb_site_static_content_id) || nb_isValidGUID($nb_site_static_content_id))
               ? $this->nb_site_static_content_list->getItem($nb_site_static_content_id)
               : null
       ;
    }