public XElement GenerateModRq(bool?ClearExpenseLines = null)
{
XElement xElement = new XElement(nameof(Bill) + "Mod");
xElement.Add(TxnID?.ToQBXML(nameof(TxnID)));
xElement.Add(TimeCreated?.ToQBXML(nameof(TimeCreated)));
xElement.Add(TimeModified?.ToQBXML(nameof(TimeModified)));
xElement.Add(EditSequence?.ToQBXML(nameof(EditSequence)));
xElement.Add(TxnNumber?.ToQBXML(nameof(TxnNumber)));
xElement.Add(VendorRef?.ToQBXML(nameof(VendorRef)));
xElement.Add(VendorAddress?.ToQBXML(nameof(VendorAddress)));
xElement.Add(APAccountRef?.ToQBXML(nameof(APAccountRef)));
xElement.Add(TxnDate?.ToQBXML(nameof(TxnDate)));
xElement.Add(DueDate?.ToQBXML(nameof(DueDate)));
xElement.Add(AmountDue?.ToQBXML(nameof(AmountDue)));
xElement.Add(CurrencyRef?.ToQBXML(nameof(CurrencyRef)));
xElement.Add(ExchangeRate?.ToQBXML(nameof(ExchangeRate)));
xElement.Add(AmountDueInHomeCurrency?.ToQBXML(nameof(AmountDueInHomeCurrency)));
xElement.Add(RefNumber?.ToQBXML(nameof(RefNumber)));
xElement.Add(TermsRef?.ToQBXML(nameof(TermsRef)));
xElement.Add(Memo?.ToQBXML(nameof(Memo)));
xElement.Add(IsTaxIncluded?.ToQBXML(nameof(IsTaxIncluded)));
xElement.Add(SalesTaxCodeRef?.ToQBXML(nameof(SalesTaxCodeRef)));
xElement.Add(IsPaid?.ToQBXML(nameof(IsPaid)));
xElement.Add(ExternalGUID?.ToQBXML(nameof(ExternalGUID)));
xElement.Add(LinkedTxnList?.ToQBXML(nameof(LinkedTxnList)));
xElement.Add(ExpenseLineList?.ToQBXML(nameof(ExpenseLineList)));
xElement.Add(ItemLineList?.ToQBXML(nameof(ItemLineList)));
xElement.Add(OpenAmount?.ToQBXML(nameof(OpenAmount)));
xElement.Add(DataExtList?.ToQBXML(nameof(DataExtList)));
return(xElement);
}