private void ProcessPriceData()
 {
     if (ConcessionPrices != null && ConcessionPrices.Any())
     {
         ConcessionPrices.ForEach(x => x.SetParentProductProxy(this));
     }
 }
 internal void IncludePrices(List <ConcessionPriceItemProxy> parentConcessionPrices)
 {
     if (parentConcessionPrices != null && parentConcessionPrices.Any())
     {
         ConcessionPrices.AddRange(parentConcessionPrices);
     }
     ProcessPriceData();
 }