module S:sig..end
val apply : ([> `assistant ], unit -> unit) GtkSignal.tval cancel : ([> `assistant ], unit -> unit) GtkSignal.tval close : ([> `assistant ], unit -> unit) GtkSignal.tval leave : ([> `assistant ], unit -> unit) GtkSignal.tval prepare : ([> `assistant ], unit -> unit) GtkSignal.t