sig
type 'slots t
val null : unit -> 'a Pool_intf.S.Pointer.t
val is_null : 'a Pool_intf.S.Pointer.t -> bool
val phys_equal :
'a Pool_intf.S.Pointer.t -> 'a Pool_intf.S.Pointer.t -> bool
val sexp_of_t :
('slots -> Sexplib.Sexp.t) ->
'slots Pool_intf.S.Pointer.t -> Sexplib.Sexp.t
end