code: func (r Network_Storage_Backup_Evault) RestoreFromSnapshot(snapshotId *int) (resp bool, err error) {
  	params := []interface{}{
  		snapshotId,
  	}
  	err = r.Session.DoRequest("SoftLayer_Network_Storage_Backup_Evault", "restoreFromSnapshot", params, &r.Options, &resp)
  	return
  }
docs: // Restore the volume from a snapshot that was previously taken.