mybatis中sqlsession关闭延迟对象为什么还能加载

InputStream inputStream = Resources.getResourceAsStream("mybatis.cfg.xml");

SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);

SqlSession sqlSession = sqlSessionFactory.openSession();

IUser user = sqlSession.getMapper(IUser.class);

List<User> users = user.findAll();

sqlSession.close();

for(User user1 : users){    System.out.println(user1);}