super(userGroupServiceName, group.copy()); //copy before passing into parent
//name not changeable on edit
get("form:groupname").setEnabled(false);
((Form)get("form")).add(new UserTablePanel("users", userGroupServiceName,
new GeoServerDataProvider<GeoServerUser>() {
@Override
protected List<GeoServerDataProvider.Property<GeoServerUser>> getProperties() {
return Arrays.asList(UserListProvider.USERNAME);
}