blockWithDifferentString.setPrefab("test:prefabWithDifferentString");
blockManager.addBlockFamily(new SymmetricFamily(new BlockUri("test:blockWithDifferentString"), blockWithDifferentString), true);
blockWithRetainedComponent = new Block();
prefabData = new PrefabData();
prefabData.addComponent(new RetainedOnBlockChangeComponent(3));
Assets.generateAsset(
new AssetUri(AssetType.PREFAB, "test:prefabWithRetainedComponent"), prefabData, Prefab.class);
blockWithRetainedComponent.setPrefab("test:prefabWithRetainedComponent");
blockManager.addBlockFamily(new SymmetricFamily(new BlockUri("test:blockWithRetainedComponent"), blockWithRetainedComponent), true);