public static function redirect(string $source_url, string $redirection_url, int $status_code=301)  {
		// create a new route
		$route = new Route();
		// add it to the list of known routes
		self::$_routes[$route->name] = $route
			->setUrl($source_url)
			->setRedirect($redirection_url, $status_code);
		// return the route for finer tuning
		return self::$_routes[$route->name];
	}