code: def username_end_time(self, **kwargs):
          
          config = ET.Element("config")
          username = ET.SubElement(config, "username", xmlns="urn:brocade.com:mgmt:brocade-aaa")
          name_key = ET.SubElement(username, "name")
          name_key.text = kwargs.pop('name')
          end_time = ET.SubElement(username, "end-time")
          end_time.text = kwargs.pop('end_time')
  
          callback = kwargs.pop('callback', self._callback)
          return callback(config)
docs: Auto Generated Code