code: def ip_rtm_config_router_id(self, **kwargs):
          
          config = ET.Element("config")
          ip = ET.SubElement(config, "ip", xmlns="urn:brocade.com:mgmt:brocade-common-def")
          rtm_config = ET.SubElement(ip, "rtm-config", xmlns="urn:brocade.com:mgmt:brocade-rtm")
          router_id = ET.SubElement(rtm_config, "router-id")
          router_id.text = kwargs.pop('router_id')
  
          callback = kwargs.pop('callback', self._callback)
          return callback(config)
docs: Auto Generated Code