@class NSObject; @protocol OS_dispatch_queue; @interface ACSystemConfigManager : NSObject { NSObject<OS_dispatch_queue> *_preferencesQueue; struct __SCPreferences { } *_preferencesSession; int _applySkipCount; } + (unsigned long long)_timeoutInterval; + (id)sharedInstance; + (void)_tearDown; + (id)_livingInstance; + (void)_scheduleSharedInstanceTeardown; - (id)init; - (int)accountsWithAccountTypeIdentifierExist:(id)a0; - (void)dealloc; - (void)_createSCPreferencesSession; - (void *)_getValueForKey:(id)a0; - (void)_destroySCPreferencesSession; - (long long)countOfAccountsWithAccountTypeIdentifier:(id)a0; - (void).cxx_destruct; - (void)_setValue:(void *)a0 forKey:(id)a1; - (void)_handleSCPreferencesSessionNotification:(unsigned int)a0; - (void)setAccountsWithAccountTypeIdentifier:(id)a0 exist:(BOOL)a1; - (void)setCountOfAccounts:(long long)a0 withAccountTypeIdentifier:(id)a1; @end