code: func (a *HistoricalApi) availablePodContainerMetrics(request *restful.Request, response *restful.Response) {
  	key := core.HistoricalKey{
  		ObjectType:    core.MetricSetTypePodContainer,
  		NamespaceName: request.PathParameter("namespace-name"),
  		PodName:       request.PathParameter("pod-name"),
  		ContainerName: request.PathParameter("container-name"),
  	}
  	a.processMetricNamesRequest(key, response)
  }
docs: // availablePodContainerMetrics returns a list of available pod container metric names.