Sourceval registered_cleaners :
(?ctx:(string * string) list -> unit -> unit Lwt.t) list ref Sourceval register_cleaner :
(?ctx:(string * string) list -> unit -> unit Lwt.t) ->
unit Sourceval register_cleaners :
(?ctx:(string * string) list -> unit -> unit Lwt.t) list ->
unit Sourceval clean_all : ?ctx:(string * string) list -> unit -> unit Lwt.t