@interface _TtC8SPSharedP33_A1F6AB55F9BFA26527C1C12C0252530F17CancellationToken : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ _isCanceled;
    void /* unknown type, empty encoding */ _cancellationBlocks;
    void /* unknown type, empty encoding */ accessQueue;
}

@end