private static String decodeNode(String node) {
        return new String(StringUtils.decodeBase32(node), StandardCharsets.UTF_8);
    }
Decode the given group name from base32hex (UTF-8). 

@param node A group name, encoded as base32hex
@return The group name
xmppserver/src/main/java/org/jivesoftware/openfire/group/GroupJID.java