@class NSString; @interface SLSystemConfigManager : NSObject { void *_prefs; BOOL _notifyForExternalChangeOnly; int _applySkipCount; NSString *_serviceType; } + (id)sharedInstanceForCallbackWhileLocked:(void *)a0; + (id)sharedInstanceForServiceType:(id)a0; - (void)_refresh; - (void)_tearDown; - (void)dealloc; - (void *)_getValueForKey:(id)a0; - (id)initWithServiceType:(id)a0; - (void)_synchronize; - (void).cxx_destruct; - (void)_setValue:(void *)a0 forKey:(id)a1; - (void)_keepAlive; - (void)_initializeSystemConfigPrefs:(id)a0; - (void)_notifyTarget:(unsigned int)a0; - (void)_setCallback:(void /* function */ *)a0 withContext:(struct { long long x0; void *x1; void /* function */ *x2; void /* function */ *x3; void /* function */ *x4; } *)a1; - (id)cachedUsername; - (void)setCachedUsername:(id)a0; @end