@class NSString; @interface HMDBackgroundOperationDataSource : NSObject <HMDBackgroundOperationDataSource> @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (id)currentDate; - (id)dateWithTimeIntervalSinceNow:(double)a0; - (double)timeIntervalSinceNowToDate:(id)a0; @end