(AccessControllerResolver) serviceSelector.select(
AccessControllerResolver.DEFAULT_RESOLVER);
getLogger().debug("Resolved AC resolver [" + acResolver + "]");
String webappUrl = ServletHelper.getWebappURI(request);
AccessController accessController = acResolver.resolveAccessController(webappUrl);
if (accessController instanceof DefaultAccessController) {
DefaultAccessController defaultAccessController =
(DefaultAccessController) accessController;
Authorizer[] authorizers = defaultAccessController.getAuthorizers();