@interface _TtCC18AppleMediaServices23AccountCachedServerDataP33_F6A001C17FCEE4AD303229B86F02BD5321ObservationController : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ lock;
    void /* unknown type, empty encoding */ observedIDs;
    void /* unknown type, empty encoding */ observedIDsContinuation;
}

@end