private BillingCompanyDto MapBillingCompanyAggregateToBillingCompanyDto(BillingCompany billingCompany)
        {
            var billingCompanyDto = new BillingCompanyDto
                {
                    Id = billingCompany.Id,
                    Name = billingCompany.BillingCompanyName.Name
                };

            return billingCompanyDto;
        }
        private BillingCompanyScrapingUrlDto MapBillingCompanyScrapingUrlToBillingCompanyScrapingUrlDto(BillingCompany billingCompany)
        {
            var billingCompanyDto = new BillingCompanyScrapingUrlDto
                {
                    Id = billingCompany.Id,
                    Url = billingCompany.BillingCompanyScrapingUrl.ScrapingUrl
                };

            return billingCompanyDto;
        }
 public void StoreBillingCompany(BillingCompany billingCompany)
 {
     // validate Ids?
     this.billingCompanies.Add(billingCompany);
 }