registerService(Injector.class, new RequestAttributeInjector());
registerService(Injector.class, new ResourcePathInjector());
registerService(Injector.class, new ResourceResolverInjector());
registerService(Injector.class, new SelfInjector());
registerService(Injector.class, new SlingObjectInjector());
registerService(Injector.class, new ValueMapInjector());
// sling models implementation pickers
registerService(ImplementationPicker.class, new FirstImplementationPicker());
// other services