}

    @Override
    public ServiceProvider asProvider() {
        return thisAsServiceProvider;
    }

    private static ServiceProvider toParentServices(ServiceRegistry serviceRegistry) {
        if (serviceRegistry instanceof ContainsServices) {
            return new ParentServices(((ContainsServices) serviceRegistry).asProvider());
        }

        MockServiceRegistry(ParentServices parentServices) {
            this.parentServices = parentServices
        }

        @Override
        ServiceProvider asProvider() {
            return new MockServiceProvider(parentServices)
        }

        @Override
        def <T> T get(Class<T> serviceType) throws UnknownServiceException, ServiceLookupException {