} private static void serializeFeedUrl(XmlSerializer serializer, FeedUrl feedUrl) throws IOException { serializer.startTag(NAMESPACE_GSYNC_URI, "feedurl"); serializer.attribute(null /* ns */, "value", feedUrl.getFeed()); serializer.attribute(null /* ns */, "service", feedUrl.getService()); serializer.attribute(null /* ns */, "authtoken", feedUrl.getAuthToken()); serializer.endTag(NAMESPACE_GSYNC_URI, "feedurl"); } private static void serializeClientToken(XmlSerializer serializer, String clientToken) throws IOException { if (StringUtils.isEmpty(clientToken)) { clientToken = ""; } serializer.startTag(NAMESPACE_GSYNC_URI, "clientToken"); serializer.text(clientToken);