@class NSArray, HDProfile, HKObserverSet; @interface HDUnitPreferencesManager : NSObject { HDProfile *_profile; NSArray *_versionedUnitPreferences; HKObserverSet *_observers; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _lock; } - (BOOL)removePreferredUnitForType:(id)a0 error:(id *)a1; - (void)dealloc; - (id)initWithProfile:(id)a0; - (void)_localeDidChange:(id)a0; - (void)addUnitPreferenceObserver:(id)a0 queue:(id)a1; - (void)setPreferredUnitToDefaultIfNotSetForType:(id)a0; - (BOOL)setPreferredUnit:(id)a0 forType:(id)a1 error:(id *)a2; - (void).cxx_destruct; - (void)unitTesting_resetUnits; - (id)unitPreferencesDictionaryForTypes:(id)a0 version:(long long)a1 authorizationOracle:(id)a2 error:(id *)a3; - (void)removeUnitPreferenceObserver:(id)a0; - (id)preferredUnitForType:(id)a0 error:(id *)a1; @end