如何在Spring Boot2.0.0.M2的@Bean方法中注册RouterFunction？

@Configuration
public class AppConfig {
    // ...
}

@Configuration
public class AppConfig {
    
    @Bean
    public RouterFunction<ServerResponse> route() {
        return RouterFunctions.route(RequestPredicates.GET("/hello"), this::handleHello);
    }
    
    private Mono<ServerResponse> handleHello(ServerRequest request) {
        return ServerResponse.ok().body(BodyInserters.fromValue("Hello, World!"));
    }
}

@SpringBootApplication
@EnableWebFlux
public class YourApplication {
    public static void main(String[] args) {
        SpringApplication.run(YourApplication.class, args);
    }
}