@class NSString, GKHostedChallengeIssueController; @interface GKChallengeIssueHostViewController : GKExtensionRemoteViewController <GKChallengeIssueHostProtocol> @property (weak, nonatomic) GKHostedChallengeIssueController *delegate; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (id)challengeExtension; @end