@class NSSet, NSDictionary, NSObject, NSUserDefaults; @protocol OS_dispatch_queue, ATXCategoricalHistogramProtocol; @interface ATXDefaultHomeScreenItemUpdater : NSObject { NSObject<OS_dispatch_queue> *_internalQueue; NSSet *_descriptors; NSDictionary *_descriptorInstallDates; NSUserDefaults *_userDefaults; id<ATXCategoricalHistogramProtocol> _spotlightAppLaunchHistogram; } @property (class, readonly, nonatomic) NSDictionary *assets; - (void)dealloc; - (void)updateDefaultsWithSystemDescriptors:(id)a0 installDatesCache:(id)a1 reason:(id)a2; - (void)_updateHomeScreenDefaultsOnQueueWithReason:(id)a0 appLaunchCounts:(id)a1; - (void)updateDefaultsIfNeededWithSystemDescriptors:(id)a0 installDatesCache:(id)a1 reason:(id)a2; - (id)_retrieveLastUpdateDate; - (void)updateDefaultsDueToAmbientConfigUpdate; - (void)_updateAllDefaultsOnQueueWithReason:(id)a0; - (void)updateDefaultsDueToRelevantHomeScreenConfigUpdate; - (void)_updateAmbientDefaultsOnQueueWithReason:(id)a0 appLaunchCounts:(id)a1; - (void)observeValueForKeyPath:(id)a0 ofObject:(id)a1 change:(id)a2 context:(void *)a3; - (void).cxx_destruct; - (void)waitForPendingAsynchronousOperations; - (id)initWithSpotlightAppLaunchHistogram:(id)a0; - (BOOL)_isDayZeroExperience; @end