如何在Spring Data REST导出的端点中使用List？

@Entity
public class User {
    // 实体类属性和方法
}

@RepositoryRestResource(collectionResourceRel = "users", path = "users")
public interface UserRepository extends JpaRepository<User, Long> {
    // 查询方法
}

@SpringBootApplication
@EnableJpaRepositories(basePackages = "com.example.repository")
public class Application {
    // 主类代码
}

GET /users

@RepositoryRestResource(collectionResourceRel = "users", path = "users")
public interface UserRepository extends JpaRepository<User, Long> {
    @Query("SELECT u FROM User u WHERE u.username = :username")
    List<User> findByUsername(@Param("username") String username);
}

GET /users/search/findByUsername?username=johndoe