code: def overlay_gateway_ip_interface_loopback_loopback_id(self, **kwargs):
          
          config = ET.Element("config")
          overlay_gateway = ET.SubElement(config, "overlay-gateway", xmlns="urn:brocade.com:mgmt:brocade-tunnels")
          name_key = ET.SubElement(overlay_gateway, "name")
          name_key.text = kwargs.pop('name')
          ip = ET.SubElement(overlay_gateway, "ip")
          interface = ET.SubElement(ip, "interface")
          loopback = ET.SubElement(interface, "loopback")
          loopback_id = ET.SubElement(loopback, "loopback-id")
          loopback_id.text = kwargs.pop('loopback_id')
  
          callback = kwargs.pop('callback', self._callback)
          return callback(config)
docs: Auto Generated Code