@Get("/")
    public String defaultHello() {
        return "Hello, world! Try sending a GET request to /hello/armeria";
    }
Note that this is not a Spring-based component but an annotated HTTP service that leverages
Armeria's built-in annotations.

@see <a href="https://armeria.dev/docs/server-annotated-service">Annotated HTTP Service</a>
examples/spring-boot-minimal/src/main/java/example/springframework/boot/minimal/HelloAnnotatedService.java