@class NSMutableDictionary, NSObject; @protocol OS_os_transaction, OS_dispatch_queue; @interface NFPowerAssertion : NSObject { unsigned int _powerNotificationConnection; struct IONotificationPort { } *_powerNotificationPort; unsigned int _powerNotificationNotifier; NSObject<OS_os_transaction> *_powerAssertTransaction; NSMutableDictionary *_assertionHolders; NSObject<OS_dispatch_queue> *_queue; } @property (nonatomic) BOOL enableDebug; + (id)sharedPowerAssertion; - (id)init; - (void)holdPowerAssertion:(id)a0; - (id)dumpState; - (void).cxx_destruct; - (id)assertionHolders; - (void)holdPowerAssertion:(id)a0 onBehalfOf:(int)a1; - (void)releasePowerAssertion:(id)a0; @end