@interface Foundation.__DataStorage : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ _bytes;
    void /* unknown type, empty encoding */ _length;
    void /* unknown type, empty encoding */ _capacity;
    void /* unknown type, empty encoding */ _offset;
    void /* unknown type, empty encoding */ _deallocator;
    void /* unknown type, empty encoding */ _needToZero;
}

@end