code: func ContainerStatsHandler(state dockerstate.TaskEngineState, statsEngine stats.Engine) func(http.ResponseWriter, *http.Request) {
  	return func(w http.ResponseWriter, r *http.Request) {
  		taskARN, err := getTaskARNByRequest(r, state)
  		if err != nil {
  			errResponseJSON, _ := json.Marshal(
  				fmt.Sprintf("V3 container stats handler: unable to get task arn from request: %s", err.Error()))
  			utils.WriteJSONToResponse(w, http.StatusBadRequest, errResponseJSON, utils.RequestTypeTaskStats)
  			return
  		}
  
  		containerID, err := getContainerIDByRequest(r, state)
  		if err != nil {
  			responseJSON, _ := json.Marshal(
  				fmt.Sprintf("V3 container stats handler: unable to get container ID from request: %s", err.Error()))
  			utils.WriteJSONToResponse(w, http.StatusBadRequest, responseJSON, utils.RequestTypeContainerStats)
  			return
  		}
  
  		seelog.Infof("V3 container stats handler: writing response for container '%s'", containerID)
  
  		// v3 handler shares the same container stats response format with v2 handler.
  		v2.WriteContainerStatsResponse(w, taskARN, containerID, statsEngine)
  	}
  }
docs: // ContainerStatsHandler returns the handler method for handling container stats requests.