code: def _is_pod_metric(labels):
          
          if 'container_name' in labels:
              if labels['container_name'] == 'POD':
                  return True
              # containerd does not report container_name="POD"
              elif labels['container_name'] == '' and labels.get('pod_name', False):
                  return True
          # container_cpu_usage_seconds_total has an id label that is a cgroup path
          # eg: /kubepods/burstable/pod531c80d9-9fc4-11e7-ba8b-42010af002bb
          # FIXME: this was needed because of a bug:
          # https://github.com/kubernetes/kubernetes/pull/51473
          # starting from k8s 1.8 we can remove this
          if 'id' in labels:
              if labels['id'].split('/')[-1].startswith('pod'):
                  return True
          return False
docs: Return whether a metric is about a pod or not.
          It can be about containers, pods, or higher levels in the cgroup hierarchy
          and we don't want to report on that.
          :param metric
          :return bool