CG.E
type t = Defaultgraphs.PackageGraph.PkgV.t * CflE.t * Defaultgraphs.PackageGraph.PkgV.t
val compare : t -> t -> int
type vertex = vertex
val src : t -> vertex
val dst : t -> vertex
type label = CflE.t
val create : vertex -> label -> vertex -> t
val label : t -> label