public viod AssignsDefaultValues()
        {
            var account = AccountBuilder.DefaultAccount().Build();

            Assert.IsTrue(account.Balance > 0);
            Assert.IsTrue(account.DueDate > DateTime.Now);
            Assert.IsNotNull(account.Customer.Address.City);
            Assert.IsNotNull(account.Customer.Address.Country);
            Assert.IsFalse(account.Customer.IsVip);
            Assert.IsNotNull(account.Customer.Name);
        }
        public viod CanCreateAccount()
        {
            var acccount = AccountBuilder.DefaultAccount().Build();

            Assert.IsNotNull(account);
        }