NSUserActivity missing contentAttributeSet property

Question

I'm implementing the iOS9 Search index using NSUserActivities. According to the documentation NSUserActivity there should be a property called contentAttributeSet that is used to add more content to the search item. However looking at the NSUserActivity class in Xcode 7 shows no property with this name. I'm using Xcode 7 beta 6.

Answer 1

Got it now.

The contentAttributeSet is of type CSSearchableItemAttributeSet, which is a class in the Core Spotlight framework. So I had to add Core Spotlight to my project and import it in the file I was using NSUserActivity in.

Sneaky sneaky, Apple!