@interface _TtC21VisionHealthAppPluginP33_CF6C513206421B216281CAD0791521A824QLItemSingleDataProvider : NSObject <QLPreviewItemDataProvider> {
    void /* unknown type, empty encoding */ data;
}

- (id)provideDataForItem:(id)a0;
- (id)init;
- (void).cxx_destruct;

@end