private String determineMaxUsersDisplay(int maxUsers) {
        return (maxUsers == 0) ? "unlimited" : String.valueOf(maxUsers);
     }
Constructs an answer on a IQ stanza that contains a search request. The
answer will be an IQ stanza of type 'result' or 'error'.

@param iq
           The IQ stanza that is the search request.
@return An answer to the provided request.
xmppserver/src/main/java/org/jivesoftware/openfire/muc/spi/IQMUCSearchHandler.java