private void GetCatalog() { if (catalogAdded) { return; } if (areCatalogHeadersReady) { catalogAsyncOp = BIWUtils.MakeGetCall(BIWUrlUtils.GetUrlCatalog(), CatalogReceived, catalogCallHeaders); } else { builderInWorldBridge.AskKernelForCatalogHeaders(); } isCatalogRequested = true; }