module Compartment: sig end
exception Not_activated
class signaller : object end
class virtual transport_invoker : object end
class ['a, 'b
] transport :signaller * 'a Queue.t * 'b Queue.t -> object end
class ['a, 'b
] duplex :signaller -> object end
class virtual t : transport_invoker list -> object end
class master : t list -> object end