private void removeOrphanedServers(AuthzSubject overlord) {
   final Collection<Server> servers = serverManager.getOrphanedServers();
   if (!servers.isEmpty()) {
     log.info("cleaning up " + servers.size() + " orphaned servers");
   }
   for (Server server : servers) {
     try {
       server = serverManager.getServerById(server.getId());
       serverManager.removeServer(overlord, server);
     } catch (ObjectNotFoundException e) {
       log.warn(e);
       log.debug(e, e);
     } catch (PermissionException e) {
       log.warn(e);
       log.debug(e, e);
     } catch (VetoException e) {
       log.warn(e);
       log.debug(e, e);
     }
   }
 }
  @SuppressWarnings("unchecked")
  private void removeDeletedResources(
      Map<Integer, List<AppdefEntityID>> agentCache, Collection<String> typeNames)
      throws ApplicationException, VetoException {
    final boolean debug = log.isDebugEnabled();
    final StopWatch watch = new StopWatch();
    final AuthzSubject subject = authzSubjectManager.findSubjectById(AuthzConstants.overlordId);
    if (debug) watch.markTimeBegin("unscheduleMeasurementsForAsyncDelete");
    unscheduleMeasurementsForAsyncDelete(agentCache);
    if (debug) watch.markTimeEnd("unscheduleMeasurementsForAsyncDelete");

    // Look through services, servers, platforms, applications, and groups
    if (debug) watch.markTimeBegin("removeApplications");
    Collection<Application> applications = applicationManager.findDeletedApplications();
    removeApplications(subject, applications);
    if (debug) watch.markTimeEnd("removeApplications");

    if (debug) watch.markTimeBegin("removeResourceGroups");
    Collection<ResourceGroup> groups = resourceGroupManager.findDeletedGroups();
    removeResourceGroups(subject, groups);
    if (debug) watch.markTimeEnd("removeResourceGroups");

    typeNames = (typeNames == null) ? Collections.EMPTY_LIST : typeNames;
    if (debug) watch.markTimeBegin("removeGroupsCompatibleWith");
    for (String name : typeNames) {
      resourceGroupManager.removeGroupsCompatibleWith(name);
    }
    if (debug) watch.markTimeEnd("removeGroupsCompatibleWith");

    Collection<Service> services = serviceManager.findDeletedServices();
    removeServices(subject, services);

    Collection<Server> servers = serverManager.findDeletedServers();
    removeServers(subject, servers);

    if (debug) watch.markTimeBegin("removePlatforms");
    Collection<Platform> platforms = platformManager.findDeletedPlatforms();
    removePlatforms(subject, platforms);
    if (debug) watch.markTimeEnd("removePlatforms");
    if (debug) log.debug("removeDeletedResources: " + watch);
  }