public Result Add(Customer customer) { if (!isExist(customer.Tc, customer.CompanyId)) { return(new Result(false, "Kullanıcı mevcut")); } var companyName = _company.Get(customer.CompanyId).Name; if (companyName == CompanyNames.Starbucks) { return(_starbucks.Add(customer)); } else { return(_portal.Add(customer)); } }