@class NSString; @protocol OSADiagnosticObserver; @interface ObserverShim : NSObject @property (readonly, weak, nonatomic) id observer; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (id)initWithObserver:(id)a0; - (void).cxx_destruct; - (BOOL)matches:(id)a0; - (void)didReceiveDiagnosticLog:(id)a0 ofType:(id)a1 details:(id)a2; - (void)didWriteDiagnosticLog:(id)a0 ofType:(id)a1 toPath:(id)a2; - (void)failedToWriteDiagnosticLog:(id)a0 ofType:(id)a1 error:(id)a2; - (void)willWriteDiagnosticLog:(id)a0 ofType:(id)a1; @end