code: def ntp_source_ip(self, **kwargs):
          
          config = ET.Element("config")
          ntp = ET.SubElement(config, "ntp", xmlns="urn:brocade.com:mgmt:brocade-ntp")
          source_ip = ET.SubElement(ntp, "source-ip")
          source_ip.text = kwargs.pop('source_ip')
  
          callback = kwargs.pop('callback', self._callback)
          return callback(config)
docs: Auto Generated Code