val equal : t -> t -> Ppx_deriving_runtime.bool
val compare : t -> t -> Ppx_deriving_runtime.int
val pretty : unit -> 'a -> Printable.Pretty.doc
val name : unit -> string
val printXml : 'a BatInnerIO.output -> unit -> unit
val to_yojson : unit -> [> `String of string ]
val arbitrary : unit -> unit QCheck.arbitrary
val leq : 'a -> 'b -> bool
val join : 'a -> 'b -> unit
val widen : 'a -> 'b -> unit
val meet : 'a -> 'b -> unit
val narrow : 'a -> 'b -> unit
val pretty_diff : unit -> 'a -> Pretty.doc