@class NSHashTable, NSObject; @protocol OS_dispatch_queue; @interface _GEOExperimentConfigurationObserverProxy : NSObject { NSHashTable *_observers; struct os_unfair_lock_s { unsigned int _os_unfair_lock_opaque; } _observersLock; } @property (retain, nonatomic) NSObject<OS_dispatch_queue> *queue; - (id)init; - (void)registerObserver:(id)a0; - (void)unregisterObserver:(id)a0; - (id)description; - (void).cxx_destruct; - (void)forEachObserver:(id /* block */)a0; - (unsigned long long)observersCount; @end