private static ProgramElementNode getNode(StructureModel model, Advice a) {
private static IProgramElement getNode(StructureModel model, Advice a) {
	private static ProgramElementNode getNode(StructureModel model, Advice a) {		//ResolvedTypeX inAspect = a.getConcreteAspect();		Member member = a.getSignature();		if (a.getSignature() == null) return null;		return lookupMember(model, member);	}