ServiceTrackerCustomizer<IUserManager, IUserManager> customizer = new ServiceTrackerCustomizer<IUserManager, IUserManager>(){
@Override
public IUserManager addingService(ServiceReference<IUserManager> reference) {
ServiceTrackerCustomizer<IUserManager, IUserManager> customizer = new ServiceTrackerCustomizer<IUserManager, IUserManager>(){
@Override
public IUserManager addingService(ServiceReference<IUserManager> reference) {