@Override
public void handleAnnotation(Annotation annotation) {
super.handleAnnotation(annotation);
if (annotation instanceof ModelChoiceFieldProperties) {
ModelChoiceFieldProperties mcfp = (ModelChoiceFieldProperties)annotation;
this.setModel(mcfp.modelClass());
try {
QuerySet<?> qs = null;
if (mcfp.filters().length > 0) {
qs = managers.forClass(getModel()).all();