object
  method display_user_creation :
    ?err:string -> unit -> Eliom_registration.Flow5.page Lwt.t
  method display_user_creation_done :
    name:string ->
    fullname:string ->
    email:string ->
    pwd:string * string -> Eliom_registration.Flow5.page Lwt.t
  method login_box_extension :
    Html5_types.div_content_fun Eliom_content.Html5.F.elt list Lwt.t
end