public static function add($route){
      if (is_a($route, 'Route')){

        // Add to tag map
        if ($route->tag) static::$tags[$route->tag] =& $route;

        // Optimize tree
        if (Options::get('core.route.auto_optimize', true)){
          $base =& static::$optimized_tree;
          foreach (explode('/',trim(preg_replace('#^(.+?)\(?:.+$#','$1',$route->URLPattern),'/')) as $segment) {
            $segment = trim($segment,'(');
            if (!isset($base[$segment])) $base[$segment] = [];
            $base =& $base[$segment];
          }
          $base[] =& $route;
        }
      }

      // Add route to active group
      if ( isset(static::$group[0]) ) static::$group[0]->add($route);

      return static::$routes[implode('', static::$prefix)][] = $route;
    }