Objective-C class extensions should be considered "private" and only be included in documentation when EXTRACT_PRIVATE is turned on.

When a class extension like the one below is declared in a .m implementation file in Objective-C it is effectively private.  Unlike languages like Java and C++ there is no way of marking members of a class in Objective-C as private.  The @private keyword only applies to data members.

@interface MyClass ()

@property (nonatomic, assign) id<SomeDelegate> delegate;
@property (nonatomic, retain) NSMutableDictionary *actions;

- (void)someMethod;

@end

Although no methods in Objective-C are really private (if you know the selector name you can call it) it would be nice if the methods didn't show up in the public interface documentation.

I've tried adding /*! \private */ to methods and properties in class Extensions but that doesn't seem to be having any effect even with EXTRACT_PRIVATE not set.