private AnnotationMirror annMirror;
@Override
public synchronized void init(ProcessingEnvironment processingEnv) {
super.init(processingEnv);
annoFactory = new AnnotationFactory(processingEnv);
annMirror = this.annoFactory.fromName(DiscountFactor.class.getCanonicalName());
relation = new SimpleSubtypeRelation(annMirror, null);
}