code: func (r Metric_Tracking_Object) GetBandwidthTotal(startDateTime *datatypes.Time, endDateTime *datatypes.Time, direction *string, typ *string) (resp uint, err error) {
  	params := []interface{}{
  		startDateTime,
  		endDateTime,
  		direction,
  		typ,
  	}
  	err = r.Session.DoRequest("SoftLayer_Metric_Tracking_Object", "getBandwidthTotal", params, &r.Options, &resp)
  	return
  }
docs: // Retrieve the total amount of bandwidth recorded by a tracking object within the given date range. This method will only work on SoftLayer_Metric_Tracking_Object for SoftLayer_Hardware objects, and SoftLayer_Virtual_Guest objects.