#460 Код-ревью контроллера авторизации

Сделать код-ревью:

public class LoginParam {

    @NotNull
    private String username;

    @NotNull
    private String password;

}

@RestController
public class AuthController {
    public static final String LOGIN_PATH = "/login";

    private final AuthService authService;

    @PostMapping(LOGIN_PATH)
    public String login(LoginParam loginParam) {
        return authService.login(loginParam.getUsername(), loginParam.getPassword());
    }
}