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

def query_metric_tags(self, metric_type, metric_id):
        """
        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
        """
        definition = self._get(self._get_metrics_tags_url(self._get_metrics_single_url(metric_type, metric_id)))
        return definition