plainBlock = new Block();
blockManager.addBlockFamily(new SymmetricFamily(new BlockUri("test:plainBlock"), plainBlock), true);
blockWithString = new Block();
PrefabData prefabData = new PrefabData();
prefabData.addComponent(new StringComponent("Test"));
Assets.generateAsset(new AssetUri(AssetType.PREFAB, "test:prefabWithString"), prefabData, Prefab.class);
blockWithString.setPrefab("test:prefabWithString");
blockManager.addBlockFamily(new SymmetricFamily(new BlockUri("test:blockWithString"), blockWithString), true);
blockWithDifferentString = new Block();