code: func (engine *DockerStatsEngine) ContainerDockerStats(taskARN string, containerID string) (*types.StatsJSON, error) {
  	engine.lock.RLock()
  	defer engine.lock.RUnlock()
  
  	containerIDToStatsContainer, ok := engine.tasksToContainers[taskARN]
  	if !ok {
  		return nil, errors.Errorf("stats engine: task '%s' for container '%s' not found",
  			taskARN, containerID)
  	}
  
  	container, ok := containerIDToStatsContainer[containerID]
  	if !ok {
  		return nil, errors.Errorf("stats engine: container not found: %s", containerID)
  	}
  	return container.statsQueue.GetLastStat(), nil
  
  }
docs: // ContainerDockerStats returns the last stored raw docker stats object for a container