returns an iterator over orders line items . concode_field_sep OrderType order concode_field_sep AddressFacade getSellerAddress concode_elem_sep AddressFacade getBuyerAddress concode_elem_sep String getSellerName concode_elem_sep String getBuyerContact concode_elem_sep String getBuyerName concode_elem_sep PartyNameType getSellerParty concode_elem_sep String getLongDate concode_elem_sep XMLGregorianCalendar getCalendar