GetTriggerMethod: String
For use with script events, this returns the name of the method that triggered the event to allow differentiation where the same event may be triggered via different methods.
Currently returned TriggerMethods are OrderFromQuote, OrderFromInvoice and QuoteFromOrder for the AfterInsert event on the OESalesOrderEntryForm and InvoiceFromQuote and OrderFromQuote for the BeforeAccept event on the INInvoiceEntryForm.