@class PLChangeStore, NSObject; @protocol OS_dispatch_source, OS_dispatch_queue; @interface PLChangeHub : NSObject { BOOL _didInitializeState; NSObject<OS_dispatch_source> *_memoryPressureSource; NSObject<OS_dispatch_queue> *_eventsSerializationQueue; PLChangeStore *_changeStore; } @property (class) unsigned long long currentInMemoryEventIndex; + (id)sharedChangeHub; - (id)init; - (void).cxx_destruct; - (unsigned long long)_inq_currentEventIndex; - (void)_inq_sendPendingEventsForRequest:(id)a0 completionHandler:(id /* block */)a1; - (void)_onEventsQueueAsyncWithTransaction:(id)a0 perform:(id /* block */)a1; - (void)_startListeningToMemoryPressureEvents; - (void)clearChangeStore:(id /* block */)a0; - (void)eventsSinceIndex:(unsigned long long)a0 filteredBy:(id /* block */)a1 onQueue:(id)a2 withBlock:(id /* block */)a3; - (void)fetchCurrentEventIndexWithCompletionHandler:(id /* block */)a0; - (void)sendPendingEventsForRequest:(id)a0 completionHandler:(id /* block */)a1; @end