func getAllInfos(group: Group; route: string;
                 middlewares: openArray[HandlerAsync]): (string,
    seq[HandlerAsync]) {....raises: [], tags: [], forbids: [].}

func newGroup(app: Prologue; route: string;
              middlewares: openArray[HandlerAsync] = @[]; parent: Group = nil): Group {.
    ...raises: [RouteError], tags: [], forbids: [].}