XStream xstream = new XStream();
xstream.alias("status", Status.class);
xstream.alias("users", UserStatusList.class);
xstream.alias("user", User.class);
xstream.addImplicitCollection(UserStatusList.class, "users");
xstream.aliasField("protected", User.class, "protect"); //can't use "protected"
xstream.omitField(Status.class, "truncated");
xstream.omitField(Status.class, "source");
xstream.omitField(Status.class, "location");
xstream.omitField(Status.class, "description");