Aqueduct.Extensions.Validation.IsCreditCardVisa C# (CSharp) Метод

        public static bool IsCreditCardVisa(this string creditCard)
        {
            if (CreditPassesFormatCheck(creditCard))
            {
                creditCard = CleanCreditCardNumber(creditCard);
                return Regex.IsMatch(creditCard, RegexPattern.CREDIT_CARD_VISA);
            }
            return false;
        }