protected static function mergeRoutes(&$routes, $added) {
		// First level (only) is merged
		foreach( $added as $type => $typeRoutes ) {
			if( isset($routes[$type]) ) {
				$routes[$type] = array_merge($typeRoutes, $routes[$type]);
			} else {
				$routes[$type] = $typeRoutes;
			}
		}
	}