`(H1 : Hashtbl.SeededHashedType) (H2 : Hashtbl.SeededHashedType) ->
sig
type key = H1.t * H2.t
type !'a t
val create : ?random:bool -> int -> 'a t
val clear : 'a t -> unit
val reset : 'a t -> unit
val copy : 'a t -> 'a t
val add : 'a t -> key -> 'a -> unit
val remove : 'a t -> key -> unit
val find : 'a t -> key -> 'a
val find_opt : 'a t -> key -> 'a option
val find_all : 'a t -> key -> 'a list
val replace : 'a t -> key -> 'a -> unit
val mem : 'a t -> key -> bool
val length : 'a t -> int
val stats : 'a t -> Hashtbl.statistics
val add_seq : 'a t -> (key * 'a) Seq.t -> unit
val replace_seq : 'a t -> (key * 'a) Seq.t -> unit
val of_seq : (key * 'a) Seq.t -> 'a t
val clean : 'a t -> unit
val stats_alive : 'a t -> Hashtbl.statistics
end`