code: func (r *runtimeOCI) libcontainerStats(ctr *Container) (*libcontainer.Stats, error) {
  	factory, err := loadFactory(r.root)
  	if err != nil {
  		return nil, err
  	}
  	container, err := factory.Load(ctr.ID())
  	if err != nil {
  		return nil, err
  	}
  	return container.Stats()
  }
docs: // libcontainerStats gets the stats for the container with the given id from runc/libcontainer