@class NSString; @interface _UIDisplayObserver : NSObject <FBSDisplayObserving> @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (id)sharedObserver; - (void)displayMonitor:(id)a0 didUpdateIdentity:(id)a1 withConfiguration:(id)a2; - (void)displayMonitor:(id)a0 willDisconnectIdentity:(id)a1; - (void)displayMonitor:(id)a0 didConnectIdentity:(id)a1 withConfiguration:(id)a2; @end