code: func CreateDownloadCommand(cfg Config) (Command, error) {
  	cfg.Flags.Sink = true
  	cfg.Flags.Source = false
  	cmd, err := CreateCommand(cfg)
  	if err != nil {
  		return nil, trace.Wrap(err)
  	}
  
  	return cmd, nil
  }
docs: // CreateDownloadCommand configures and returns a command used
  // to download a file