code: func (ds *dockerService) ContainerStats(_ context.Context, r *runtimeapi.ContainerStatsRequest) (*runtimeapi.ContainerStatsResponse, error) {
  	stats, err := ds.getContainerStats(r.ContainerId)
  	if err != nil {
  		return nil, err
  	}
  	return &runtimeapi.ContainerStatsResponse{Stats: stats}, nil
  }
docs: // ContainerStats returns stats for a container stats request based on container id.