@class NSURL, NSString; @interface FBKPreviewItemTXT : NSURL <QLPreviewItem> @property (readonly, nonatomic) NSURL *previewItemURL; @property (readonly, nonatomic) NSString *previewItemTitle; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (id)previewItemContentType; @end