Functor Hashtbl2_pair.Make

module Make: 
functor (Key1 : Key) ->
functor (Key2 : Key) -> sig .. end
Parameters:
Key1 : Key
Key2 : Key

include ??
include Equal.S1
val create : unit -> 'data Hashtbl2_pair.t
val of_alist_exn : (Key1.t * Key2.t * 'data) list -> 'data Hashtbl2_pair.t
val sexp_of_t : ('data -> Sexplib.Sexp.t) -> 'data Hashtbl2_pair.t -> Sexplib.Sexp.t