code: func printNodes(nodes []*api.Node, detailed bool) (string, error) {
  	var result []string
  	if detailed {
  		result = detailedNodes(nodes)
  	} else {
  		result = simpleNodes(nodes)
  	}
  
  	return columnize.SimpleFormat(result), nil
  }
docs: // printNodes accepts a list of nodes and prints information in a tabular
  // format about the nodes.