val serialize : Faraday.t -> yield:(Faraday.t -> unit Lwt.t) -> writev:(Faraday.bigstring Faraday.iovec list -> [ `Ok of int | `Closed ] Lwt.t) -> unit Lwt.tFaraday_lwtval serialize : Faraday.t -> yield:(Faraday.t -> unit Lwt.t) -> writev:(Faraday.bigstring Faraday.iovec list -> [ `Ok of int | `Closed ] Lwt.t) -> unit Lwt.t