Usage exampleFConcertClientLocalDataStoreMyStore;FNameMyKey(TEXT("MyKey1"));uint64MyValue=100ull;if(autoStored=MyStore.FetchOrAdd(MyKey,MyValue)){if(Stored=MyStore.Store(MyKey,Stored.GetValue()+10)){check(MyStore.FetchAs(MyKey).GetValue()==MyValue+10);if(Stored=MyStore.CompareExchange(MyKey,MyValue+10,MyValue+20)){check(MyStore.FetchAs(MyKey).GetValue()==MyValue+20);}}}check(MyStore.FetchAs(MyKey).GetValue()==MyValue+20);