@class NSArray, NSString; @protocol _EXQueryObserverDelegate; @interface _EXQueryObserver : _EXQueryController <_EXQueryControllerDelegate> @property (weak) id<_EXQueryObserverDelegate> internalDelegate; @property (readonly) NSArray *extensions; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (id)initWithQueries:(id)a0 delegate:(id)a1; - (void).cxx_destruct; - (void)queryControllerDidUpdate:(id)a0 difference:(id)a1; @end