?packing:(GObj.widget -> unit) -> unit ->
GTree.view * GTree.tree_store * columns * state
-(** This callback creates the Connect to hypervisor dialog. *)
-val open_connection : unit -> unit
+(** Open a new connection to the hypervisor URI given. *)
+val open_connection : string -> unit
(** Return the amount of historical data that we hold about a
domain (in seconds).