public async Task <bool> Pay()
        {
            Transaction = new Transaction();

            Transaction.CardNumber   = CardNumber.CardMask();
            Transaction.Cvv          = Cvv;
            Transaction.Month        = Month.Value;
            Transaction.Year         = Year.Value;
            Transaction.FullName     = FullName;
            Transaction.Amount       = PurchaseValue.Value;
            Transaction.Installment  = Installment.Value;
            Transaction.IdShopkeeper = IdShopKeeper.Value;
            Transaction.Situation    = true;
            Transaction.CreatedAt    = DateTime.Now;

            var acquirer = _desafioContext.Acquirers.SingleOrDefault(p => p.Id == 1);

            if (acquirer == null)
            {
                return(false);
            }

            Transaction.NetAmount = PurchaseValue.Value - (PurchaseValue.Value * (acquirer.Tax / 100));

            _desafioContext.Transactions.Add(Transaction);

            try
            {
                await _desafioContext.SaveChangesAsync();

                return(true);
            }
            catch (Exception e)
            {
                return(false);
            }
        }