@class PKFieldProperties, NSString, NFLoyaltyAndPaymentSession, NFDigitalCarKeySession, NSHashTable, NSObject, NFFieldDetectSession; @protocol NFSession, OS_dispatch_source, OS_dispatch_queue, PKFieldDetectorDelegate; @interface PKFieldDetector : NSObject { NFFieldDetectSession *_fieldDetectSession; unsigned long long _fieldDetectSessionRetryCount; BOOL _fieldDetectSessionRequested; BOOL _nfcRadioEnabled; PKFieldProperties *_fieldPropertiesToLookup; NFLoyaltyAndPaymentSession *_fieldPropertiesLookupLoyaltySession; NFDigitalCarKeySession *_fieldPropertiesLookupDigitalCarKeySession; NSObject *_fieldPropertiesLookupSessionHandle; NSObject *_fieldPropertiesLookupTimer; unsigned long long _fieldPropertieslookupSynchronizer; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _lock; NSHashTable *_observers; unsigned long long _enablePersistentFieldDetectionReasons; PKFieldProperties *_fieldProperties; NSObject *_fieldDetectorSerialQueue; NSObject *_replyQueue; } @property (readonly, weak, nonatomic) PKFieldProperties *fieldProperties; @property (weak, nonatomic) id delegate; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (void)updateRadioState; - (id)init; - (void)dealloc; - (void)registerObserver:(id)a0; - (void)_endLookup; - (void)sessionDidEndUnexpectedly:(id)a0; - (void)fieldDetectSession:(id)a0 didEnterFieldWithNotification:(id)a1; - (void)setPersistentFieldDetectionEnabled:(BOOL)a0; - (void)unregisterObserver:(id)a0; - (void)loyaltyAndPaymentSession:(id)a0 didPerformValueAddedServiceTransactions:(id)a1; - (void)loyaltyAndPaymentSessionDidEndUnexpectedly:(id)a0; - (void)loyaltyAndPaymentSession:(id)a0 didEndTransaction:(id)a1; - (void)_setPersistentFieldDetectionEnabled:(BOOL)a0; - (void)requestPersistentFieldDetectionEnabled:(BOOL)a0 withReason:(unsigned long long)a1; - (void).cxx_destruct; - (void)_invalidateFieldDetectSession; - (void)session:(id)a0 didEndTransaction:(id)a1; - (void)fieldDetectSessionDidExitField:(id)a0; - (void)_startFieldDetectSession; - (id)initWithDelegate:(id)a0; - (void)_startLookup; - (void)fieldDetectSessionDidEndUnexpectedly:(id)a0; - (void)_endLookupAndNotify; - (void)_restartFieldDetectSession; - (void)_evaulatePersistentFieldDetectionEnablementReasons; @end