Builder.JobStatusval has_id : t -> boolval id_get : t -> stringval id_set : t -> string -> unitval has_description : t -> boolval description_get : t -> stringval description_set : t -> string -> unitval can_cancel_get : t -> boolval can_cancel_set : t -> bool -> unitval can_rebuild_get : t -> boolval can_rebuild_set : t -> bool -> unitval init_root : ?message_size:int -> unit -> t