code: func (r *Request) RoutePath() string {
  	if r.route != nil {
  		return r.route.Path
  	}
  	return ""
  }
docs: // RoutePath returns the routed path string. Eg, if a route was registered with
  // router.Get("/suggestions/:suggestion_id/comments", f), then RoutePath will return "/suggestions/:suggestion_id/comments".