code: def username_user_password(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')
          user_password = ET.SubElement(username, "user-password")
          user_password.text = kwargs.pop('user_password')
  
          callback = kwargs.pop('callback', self._callback)
          return callback(config)
docs: Auto Generated Code