public InheritanceGraphEdge createEdge(XObjectType subtype, XObjectType supertype, int edgeType) {
public InheritanceGraphEdge createEdge(ObjectType subtype, ObjectType supertype, int edgeType) {
	public InheritanceGraphEdge createEdge(XObjectType subtype, XObjectType supertype, int edgeType) {		InheritanceGraphEdge edge = createEdge(subtype, supertype);		edge.setType(edgeType);		return edge;	}