throws IOException,PasswordPolicyException {
GeoServerUserGroupService ugService = getUserGroupService(ugServiceName);
GeoServerUserGroupStore ugStore = null;
try {
if (ugService.canCreateStore()) {
ugStore = new UserGroupStoreValidationWrapper(ugService.createStore());
Set<GeoServerUserGroup> orig = ugStore.getGroupsForUser(user);
Set<GeoServerUserGroup> add = new HashSet<GeoServerUserGroup>();
Set<GeoServerUserGroup> remove = new HashSet<GeoServerUserGroup>();