code: func statValuesToDatapoints(vals []IOStatValue, prefix string, tags map[string]string, ts string) []producers.Datapoint {
  	var datapoints []producers.Datapoint
  	for _, s := range vals {
  		op := strings.ToLower(s.Operation)
  		d := producers.Datapoint{
  			Name:      prefix + "." + op,
  			Value:     s.Value,
  			Tags:      tags,
  			Timestamp: ts,
  			Unit:      bytes,
  		}
  		datapoints = append(datapoints, d)
  	}
  	return datapoints
  }
docs: // statValuesToDatapoints converts a list of IO stats to a list of datapoints