App rejected because of use of GraphicsServices.framework

[renetik]

It looks like this library is the source so I have to stop using it , many thanks anyway :) it worked quite well until this...

https://stackoverflow.com/questions/49059668/appstore-rejection-performance-software-requirements-prefsroot-graphicsser

Your app uses or references the following non-public APIs:

GraphicsServices.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.