@interface HealthRecordsUI.PDFPreviewDataSource : NSObject <UICollectionViewDataSource> {
    void /* unknown type, empty encoding */ previewImages;
}

- (long long)collectionView:(id)a0 numberOfItemsInSection:(long long)a1;
- (id)collectionView:(id)a0 cellForItemAtIndexPath:(id)a1;
- (id)init;
- (void).cxx_destruct;

@end