server.addModule(new EntityTimeModule());
server.addModule(new VcardTempModule());
server.addModule(new XmppPingModule());
server.addModule(new PrivateDataModule());
server.addModule(new InBandRegistrationModule());
server.addModule(new AdhocCommandsModule());
final ServiceAdministrationModule serviceAdministrationModule = new ServiceAdministrationModule();
// unless admin user account with a secure password is added, this will be not become effective
serviceAdministrationModule.setAddAdminJIDs(Arrays.asList(adminJID));
server.addModule(serviceAdministrationModule);