Disco.Identitytype t = Xmpp_disco.Make(Client).Identity.t = {category : string; | 
type' : string; | 
name : string option; | 
lang : string option; | 
}val create : ?name:string -> ?lang:string -> string -> string -> tval parser : t Xmlc.Parser.tval pp : t Fmt.tval to_xml : t -> Xmlc.Tree.t