Spring boot simple ribbon application class

package com.example.ribbon.client;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
public class RibbonClientApplication {

    public static void main(String[] args) {
        SpringApplication.run(RibbonClientApplication.class, args);
    }

    @LoadBalanced
    @Bean
    RestTemplate restTemplate() {
        return new RestTemplate();
    }

}

@RestController
class RibbonController {

    private final RestTemplate restTemplate;

    RibbonController(RestTemplate restTemplate) {
        this.restTemplate = restTemplate;
    }

    @GetMapping
    public String sayHi() {
        return "Answer is: " + restTemplate.getForObject("http://say-hi/", String.class);
    }
}