code: def get_config(self):
          
          config = self._kwargs.copy()
          config.update({
              'metric': self.__class__.__name__,
              'name': self.name,
              'output_names': self.output_names,
              'label_names': self.label_names})
          return config
docs: Save configurations of metric. Can be recreated
          from configs with metric.create(``**config``)