if (DEBUG) System.out.println("Superclass link: " + subclass.getSignature() + " --> " + superclass.getSignature());
	public void addSuperclassLink(ObjectType subclass, ObjectType superclass) {		//System.out.println("Superclass link: " + subclass.getSignature() + " --> " + superclass.getSignature());		inheritanceGraph.createEdge(subclass, superclass, InheritanceGraphEdgeTypes.CLASS_EDGE);	}