@Override
    public Element createVCard(String username, Element vCardElement) throws AlreadyExistsException {
        LOG.debug("createvcard: {}", vCardElement.asXML());
        return super.createVCard(username, vCardElement);
    }
@see org.jivesoftware.openfire.vcard.DefaultVCardProvider#createVCard(java.lang.String, org.dom4j.Element)
xmppserver/src/main/java/org/jivesoftware/openfire/crowd/CrowdVCardProvider.java