docs: def parse_xml_node(self, node):
          '''Parse an xml.dom Node object representing a configuration set into
          this object.
  
          '''
          self.id = node.getAttributeNS(RTS_NS, 'id')
          self._config_data = []
          for d in node.getElementsByTagNameNS(RTS_NS, 'ConfigurationData'):
              self._config_data.append(ConfigurationData().parse_xml_node(d))
          return self