setSearchDisplayController considered private-API?

Question

I recently submitted an app for app review but I got rejected because of the use of a private API. I\'m still a bit new to iPhone developing so I was wondering if someone could

Answer 1

Is -setSearchDisplayController: mentioned anywhere in the documentation (I don't think it is)? If it is not then it's not a public API.

The fact that you have to use -performSelector:withObject: and can't call it directly is another giveaway. -setSearchDisplayController obviously isn't included in any header files.