code: func (r Virtual_Storage_Repository) GetAverageDiskUsageMetricDataFromInfluxByDate(startDateTime *datatypes.Time, endDateTime *datatypes.Time) (resp datatypes.Float64, err error) {
  	params := []interface{}{
  		startDateTime,
  		endDateTime,
  	}
  	err = r.Session.DoRequest("SoftLayer_Virtual_Storage_Repository", "getAverageDiskUsageMetricDataFromInfluxByDate", params, &r.Options, &resp)
  	return
  }
docs: // Returns the average disk space usage for a storage repository.