code: def query_metric_tags(self, metric_type, metric_id):
          
          definition = self._get(self._get_metrics_tags_url(self._get_metrics_single_url(metric_type, metric_id)))
          return definition
docs: Returns a list of tags in the metric definition.
  
          :param metric_type: MetricType to be matched (required)
          :param metric_id: Exact string matching metric id