我需要一个JPA查询来对过去4小时发布的帖子进行排序

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;
import java.util.List;

public class PostRepository {

    @PersistenceContext
    private EntityManager entityManager;

    public List<Post> findPostsPublishedWithinLast4Hours() {
        LocalDateTime fourHoursAgo = LocalDateTime.now().minus(4, ChronoUnit.HOURS);

        String jpql = "SELECT p FROM Post p WHERE p.publishTime >= :fourHoursAgo ORDER BY p.publishTime DESC";
        TypedQuery<Post> query = entityManager.createQuery(jpql, Post.class);
        query.setParameter("fourHoursAgo", fourHoursAgo);

        return query.getResultList();
    }
}