public string Charge(MoneyValue money)
{
money = _cantorPolicy.Exchange(money, Currency.EUR);
if (_ballance.CanCharge(money))
{
_ballance = new MoneyValue(_ballance.Amount - money.Amount, Currency.EUR);
return($"Charge {money} success! {_currentBalance}");
}
throw new InvalidOperationException($"Charge {money} can't be done on account. Rejected.");
}