public void DeleteDocumentValid()
        {
            var store = new DocumentStore { ConnectionStringName = AppSettings.DataBaseName };
            store.Initialize();
            var repo = new ValidationRepository(store);

            var customer = new Customer
                {
                    City = "Almaville",
                    EMail = "*****@*****.**",
                    Name = "Customer, Anna",
                    Number = "34",
                    Street = "Lohengrin",
                };
            customer.Orders.Add(new Order { Amount = 23, Name = "Order 1" });
            customer.Orders.Add(new Order { Amount = 245, Name = "Order 2" });
            customer.Orders.Add(new Order { Amount = 5, Name = "Order 3" });
            customer.Orders.Add(new Order { Amount = 5476, Name = "Order 4" });
            repo.SaveDocument(customer);
            repo.DeleteDocument<Customer>(customer.Id);
        }