val equal : t -> t -> boolval compare : t -> t -> intval pretty : unit -> t -> Printable.Pretty.docval printXml : 'a BatInnerIO.output -> t -> unitval name : unit -> stringval to_yojson : t -> Yojson.Safe.tval arbitrary : unit -> t QCheck.arbitraryval pretty_diff : unit -> (t * t) -> Lattice.Pretty.doc