@Override
    public void addExtraIdentity(final String category, final String name, final String type) {
        final Element identity = DocumentHelper.createElement("identity");
        identity.addAttribute("category", category);
        identity.addAttribute("name", name);
        identity.addAttribute("type", type);
        extraDiscoIdentities.add(identity);
    }
Adds an extra Disco identity to the list of identities returned for the conference service.
@param category Category for identity.  e.g. conference
@param name Descriptive name for identity.  e.g. Public Chatrooms
@param type Type for identity.  e.g. text
xmppserver/src/main/java/org/jivesoftware/openfire/muc/spi/MultiUserChatServiceImpl.java