@class NSString; @interface QLPreviewProvider : NSObject <NSExtensionRequestHandling> @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (void)beginRequestWithExtensionContext:(id)a0; - (void)providePreviewForFileRequest:(id)a0 completionHandler:(id /* block */)a1; @end