Spring Cloud Rest app

HomeController.java

package com.melardev.cloud.rest.controllers;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HomeController {

    @Value("${app.id}")
    String instance;

    @GetMapping("/")
    public String hi() {
        return "Welcome, I am " + instance;
    }
}