inheritanceGraph.createEdge(subclass, superclass, InheritanceGraphEdgeTypes.EXTENDS_EDGE);
inheritanceGraph.createEdge(subclass, superclass, InheritanceGraphEdgeTypes.CLASS_EDGE);
	public void addSuperclassLink(XClassType subclass, XClassType superclass) {		inheritanceGraph.createEdge(subclass, superclass, InheritanceGraphEdgeTypes.EXTENDS_EDGE);	}