XStream xstream = new XStream(new DomDriver());
xstream.alias("account", RegionAccount.class);
xstream.alias("user", RegionUser.class);
xstream.aliasField("id", RegionAccount.class, "uuid");
xstream.aliasField("name", RegionAccount.class, "accountName");
xstream.aliasField("accounttype", RegionAccount.class, "type");
xstream.aliasField("domainid", RegionAccount.class, "domainUuid");
xstream.aliasField("networkdomain", RegionAccount.class, "networkDomain");
xstream.aliasField("id", RegionUser.class, "uuid");
xstream.aliasField("accountId", RegionUser.class, "accountUuid");
ObjectInputStream in = xstream.createObjectInputStream(is);