code: def _check_or_set_default_params(self):
          
          if not hasattr(self, 'date'):
              self._set_param('date', datetime.utcnow().strftime('%Y-%m-%d'))
          if not hasattr(self, 'version'):
              self._set_param('version', self.default_version)
          # pylint: disable=no-member
          if not hasattr(self, 'description') or self.description is None:
              getattr(self, '_set_param')('description', self.warning_message)
docs: Check key and set default vaule when it does not exists.