code: func printVLANs(tsv bool, vlans ...*crimson.VLAN) {
  	if len(vlans) > 0 {
  		p := newStdoutPrinter(tsv)
  		defer p.Flush()
  		if !tsv {
  			p.Row("ID", "Alias", "Description", "State", "CIDR Block")
  		}
  		for _, v := range vlans {
  			p.Row(v.Id, v.Alias, v.Description, v.State, v.CidrBlock)
  		}
  	}
  }
docs: // printVLANs prints VLAN data to stdout in tab-separated columns.