如何为组合键创建从CrudRepository扩展的方法

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

import org.springframework.data.repository.CrudRepository;

public interface UserRepository extends CrudRepository<User, UserKey> {

}

import java.io.Serializable;

public class UserKey implements Serializable {
    private Long id;
    private String name;

    // 省略构造函数、getter和setter方法
}

import org.springframework.data.jpa.repository.Query;
import java.util.List;

public interface UserRepository extends CrudRepository<User, UserKey> {
    List<User> findByAgeGreaterThan(int age);

    @Query("SELECT u FROM User u WHERE u.name LIKE %:keyword%")
    List<User> searchByName(String keyword);
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class UserService {
    private final UserRepository userRepository;

    @Autowired
    public UserService(UserRepository userRepository) {
        this.userRepository = userRepository;
    }

    public List<User> getUsersByAgeGreaterThan(int age) {
        return userRepository.findByAgeGreaterThan(age);
    }

    public List<User> searchUsersByName(String keyword) {
        return userRepository.searchByName(keyword);
    }
}