public static function updateConference(int $confId) : bool
 {
     Auth::checkAuthentication();
     $conferenceTitle = Request::post("conference_title", true);
     $conferenceVenueName = Request::post("conference_venue", true);
     if (!self::validateConference($conferenceTitle, $conferenceVenueName)) {
         return false;
     }
     $venue = VenueModel::getVenueByName($conferenceVenueName);
     return self::updateConferenceInDb($confId, $conferenceTitle, (int) $venue->venue_id, (int) Session::get('user_id'));
 }