@Override
 public boolean isReadOnly() {
   return delegate.isReadOnly();
 }
 @Override
 public void deleteVCard(String username) {
   delegate.deleteVCard(username);
 }
 @Override
 public Element createVCard(String username, Element vCardElement) throws AlreadyExistsException {
   final Element element = delegate.createVCard(username, vCardElement);
   Resizer.resizeAvatar(element);
   return element;
 }
 @Override
 public Element updateVCard(String username, Element vCardElement) throws NotFoundException {
   final Element element = delegate.updateVCard(username, vCardElement);
   Resizer.resizeAvatar(element);
   return element;
 }
 @Override
 public Element loadVCard(String username) {
   final Element element = delegate.loadVCard(username);
   Resizer.resizeAvatar(element);
   return element;
 }