[3.1模型的调整](3.1%E6%A8%A1%E5%9E%8B%E7%9A%84%E8%B0%83%E6%95%B4.md) [3.2模型save方法调整](3.2%E6%A8%A1%E5%9E%8Bsave%E6%96%B9%E6%B3%95%E8%B0%83%E6%95%B4.md) [3.3模型高级方法调整](3.3%E6%A8%A1%E5%9E%8B%E9%AB%98%E7%BA%A7%E6%96%B9%E6%B3%95%E8%B0%83%E6%95%B4.md) [3.4其它升级指导内容](3.4%E5%85%B6%E5%AE%83%E5%8D%87%E7%BA%A7%E6%8C%87%E5%AF%BC%E5%86%85%E5%AE%B9.md)