苹果审核过程中，发现使用了私有Api PrivateFrameworks/BackBoardServices.framework，不知道layabox的native部分是否使用了这个框架。
被拒的内容是：
Your app uses or references the following non-public APIs:
- PrivateFrameworks/BackBoardServices.framework
The use of non-public APIs is not permitted on the App Store because it can lead to a poor user experience should these APIs change.
Continuing to use or conceal non-public APIs in future submissions of this app may result in the termination of your Apple Developer account, as well as removal of all associated apps from the App Store.
