public override string ToString()
        {
            string result = "";

            result += "_customerOrders:" + Environment.NewLine + _customerOrders.ToString() +
                      Environment.NewLine + Environment.NewLine + Environment.NewLine;
            result += "_customerOrderParts:" + Environment.NewLine +
                      _customerOrderParts.ToString() + Environment.NewLine + Environment.NewLine +
                      Environment.NewLine;
            result += "_demandToProviderTable:" + Environment.NewLine +
                      _demandToProviderTable.ToString() + Environment.NewLine +
                      Environment.NewLine + Environment.NewLine;
            result += "_productionOrderBoms:" + Environment.NewLine +
                      _productionOrderBoms.ToString() + Environment.NewLine + Environment.NewLine +
                      Environment.NewLine;
            result += "_productionOrderOperations:" + Environment.NewLine +
                      _productionOrderOperations.ToString() + Environment.NewLine +
                      Environment.NewLine + Environment.NewLine;
            result += "_productionOrders:" + Environment.NewLine + _productionOrders.ToString() +
                      Environment.NewLine + Environment.NewLine + Environment.NewLine;
            result += "_providerToDemandTable:" + Environment.NewLine +
                      _providerToDemandTable.ToString() + Environment.NewLine +
                      Environment.NewLine + Environment.NewLine;
            result += "_purchaseOrderParts:" + Environment.NewLine +
                      _purchaseOrderParts.ToString() + Environment.NewLine + Environment.NewLine +
                      Environment.NewLine;
            result += "_purchaseOrders:" + Environment.NewLine + _purchaseOrders.ToString() +
                      Environment.NewLine + Environment.NewLine + Environment.NewLine;
            result += "_stockExchangeDemands:" + Environment.NewLine +
                      _stockExchangeDemands.ToString() + Environment.NewLine + Environment.NewLine +
                      Environment.NewLine;
            result += "_stockExchangeProviders:" + Environment.NewLine +
                      _stockExchangeProviders.ToString() + Environment.NewLine +
                      Environment.NewLine + Environment.NewLine;

            return(result);
        }
 public override string ToString()
 {
     return(StackSet.ToString());
 }