@class NSObject;
@protocol GKNATObserverDelegate;
@interface GKNATObserver : NSObject
@property NSObject<GKNATObserverDelegate> *delegate;
+ (id)allocWithZone:(struct _NSZone { } *)a0;
- (void)shouldTryNATCheck;
- (int)currentNATType;
- (id)initWithOptions:(id)a0;
@end