# Module MoreLabels.Hashtbl

    module Hashtbl: sig .. end

    type ('a, 'b) t = ('a, 'b) Hashtbl.t

    val create : int -> ('a, 'b) t

    val clear : ('a, 'b) t -> unit

    val add : ('a, 'b) t -> key:'a -> data:'b -> unit

    val copy : ('a, 'b) t -> ('a, 'b) t

    val find : ('a, 'b) t -> 'a -> 'b

    val find_all : ('a, 'b) t -> 'a -> 'b list

    val mem : ('a, 'b) t -> 'a -> bool

    val remove : ('a, 'b) t -> 'a -> unit

    val replace : ('a, 'b) t -> key:'a -> data:'b -> unit

    val iter : f:(key:'a -> data:'b -> unit) -> ('a, 'b) t -> unit

    val fold : f:(key:'a -> data:'b -> 'c -> 'c) ->
           ('a, 'b) t -> init:'c -> 'c

    val length : ('a, 'b) t -> int

    module type HashedType = Hashtbl.HashedType

    module type S = sig .. end

    module Make: functor (H : HashedType) -> S  with type key = H.t

    val hash : 'a -> int

    val hash_param : int -> int -> 'a -> int