public virtual List <string> GetCash(IBanknote banknote, List <string> alternatives)
        {
            if (_nextHandler == null)
            {
                return(alternatives);
            }

            return(_nextHandler.GetCash(banknote, alternatives));
        }
 public List <string> GetCash(IBanknote banknote, List <string> alternatives)
 {
     return(_handler.GetCash(banknote, alternatives));
 }