System/Library/Frameworks/GameplayKit.framework

GKSystemArc4RandomSource.h

NSObject
>
GKRandomSource

@interface GKSystemArc4RandomSource : GKRandomSource

- (id)copyWithZone:(struct _NSZone { } *)a0;
- (unsigned long long)nextIntWithUpperBound:(unsigned long long)a0;
- (long long)nextInt;

@end