    def add_metric(self,
                   labels: Sequence[str],
                   value: Dict[str, str],
                   timestamp: Optional[Union[Timestamp, float]] = None,
                   ) -> None:
        """Add a metric to the metric family.

        Args:
          labels: A list of label values
          value: A dict of labels
        """
        self.samples.append(Sample(
            self.name + '_info',
            dict(dict(zip(self._labelnames, labels)), **value),
            1,
            timestamp,
        ))
Add a metric to the metric family.

Args:
labels: A list of label values
value: A dict of labels
prometheus_client/metrics_core.py