}
public static List listGroups(NamespaceAccessToken nat, String caller, String path) throws Exception {
List result = new ArrayList();
SlideToken slideToken = new SlideTokenImpl(new CredentialsToken(caller));
Structure structure = nat.getStructureHelper();
Content content = nat.getContentHelper();
ObjectNode object = structure.retrieve(slideToken,path);
Enumeration enumeration = structure.getChildren(slideToken,object);