@class NSString, GKPlayerInternal; @interface GKConcernInternal : GKInternalRepresentation @property (retain, nonatomic) GKPlayerInternal *player; @property (nonatomic) unsigned int concernID; @property (copy, nonatomic) NSString *message; + (BOOL)supportsSecureCoding; + (id)secureCodedPropertyKeys; - (unsigned long long)hash; - (void).cxx_destruct; - (BOOL)isEqual:(id)a0; @end