public static async Task OrderAsync()
{
Customer greatCustomer = null;
Article article = null;
Article article2 = null;
greatCustomer = await GetOrCreateGreatCustomerAsync().ConfigureAwait(false);
article = await GetOrCreateAggregateAsync <ArticleViewModel, Article>(readRepository, x => x.Articlenumber == "A12345", () => new Article(ArticleId.Generate(), "A12345", "A great article", Money.EUR(99.99m)))
.ConfigureAwait(false);
article2 = await GetOrCreateAggregateAsync <ArticleViewModel, Article>(readRepository, x => x.Articlenumber == "B12345", () => new Article(ArticleId.Generate(), "B12345", "Another great article", Money.EUR(59.99m)))
.ConfigureAwait(false);
var shoppingCart = new ShoppingCart(ShoppingCartId.Generate(), greatCustomer.Id, greatCustomer.StateModel.Name);
var shoppingCartArticle1 = await shoppingCart.PlaceArticleAsync(ShoppingCartArticleId.Generate(shoppingCart.Id), article.Id, 1, repository);
await shoppingCart.PlaceArticleAsync(ShoppingCartArticleId.Generate(shoppingCart.Id), article2.Id, 1, repository);
shoppingCartArticle1.RemoveFromShoppingCart();
shoppingCart.Order(repository);
await repository.SaveAsync(shoppingCart);
var projection = CustomerState.LoadState(greatCustomer.StateModel);
}