@class NSString, NSSet, STUsageBlock; @interface STUsageCategory : NSManagedObject @property (copy, nonatomic) NSString *identifier; @property (nonatomic) long long totalTimeInSeconds; @property (retain, nonatomic) NSSet *timedItems; @property (retain, nonatomic) STUsageBlock *block; + (id)applicationAndWebItemsExcludingSystemHiddenApplications:(id)a0; + (id)categoryItemsExcludingSystemCategories:(id)a0; @end