Understanding this use of “(Private)” in @interface declaration

Question

I\'ve seen some code written this way:

@interface AViewController(Private)

I wanted to know if that (Private) means something when

Answer 1

Private is just a way to define a category on an object. Does not mean much to Apple but I would recommend using a unique name whenever adding categories to well known libraries such as ones in the FoundationFramework. If your naming convention is a prefix of AV then add a category like this.

@interface AViewController(AVPrivate);