code: def save_xml(self, doc, element):
          '''Save this message_sending object into an xml.dom.Element object.'''
          for cond in self._targets:
              new_element = doc.createElementNS(RTS_NS, RTS_NS_S + 'targets')
              new_element.setAttributeNS(XSI_NS, XSI_NS_S + 'type', 'rtsExt:condition_ext')
              cond.save_xml(doc, new_element)
              element.appendChild(new_elementf save_xml(self, doc, element):
          '''Save this message_sending object into an xml.dom.Element object.'''
          for cond in self._targets:
              new_element = doc.createElementNS(RTS_NS, RTS_NS_S + 'targets')
              new_element.setAttributeNS(XSI_NS, XSI_NS_S + 'type', 'rtsExt:condition_ext')
              cond.save_xml(doc, new_element)
              element.appendChild(new_element)
docs: Save this message_sending object into an xml.dom.Element object.