ios - How can Mobile Mouse invoke multi-touch events without using a private API -

So I was trying to add some features to the app which will work on the mobile mouse equally (you can have your iPhone A touchpad) Anyways, I ran into a road block with multi-touch gestures, because they do not have any public APIs to make the program

So my question is, if the mobile mouse is using a private API, So why did not Apple reject the app? Which leads me to the question that if they have not used the private API, how would they have done it?