我只看到这个:
     /**
     * Find all entities of this type
     */
    public static <T extends JPABase> List<T> findAll() {
        throw new UnsupportedOperationException("Please annotate your JPA model with @javax.persistence.Entity annotation.");
    }
它的实现在哪里?我的意思是,这些 SQL 序列放在哪里?