code: def update_metric_tags(self, metric_type, metric_id, **tags):
          
          self._put(self._get_metrics_tags_url(self._get_metrics_single_url(metric_type, metric_id)), tags, parse_json=False)
docs: Replace the metric_id's tags with given **tags
  
          :param metric_type: MetricType to be matched (required)
          :param metric_id: Exact string matching metric id
          :param tags: Updated key/value tag values of the metric