code: func NewCmdCreateServiceExternalName(f cmdutil.Factory, ioStreams genericclioptions.IOStreams) *cobra.Command {
  	options := &ServiceExternalNameOpts{
  		CreateSubcommandOptions: NewCreateSubcommandOptions(ioStreams),
  	}
  
  	cmd := &cobra.Command{
  		Use:                   "externalname NAME --external-name external.name [--dry-run]",
  		DisableFlagsInUseLine: true,
  		Short:                 i18n.T("Create an ExternalName service."),
  		Long:                  serviceExternalNameLong,
  		Example:               serviceExternalNameExample,
  		Run: func(cmd *cobra.Command, args []string) {
  			cmdutil.CheckErr(options.Complete(f, cmd, args))
  			cmdutil.CheckErr(options.Run())
  		},
  	}
  
  	options.CreateSubcommandOptions.PrintFlags.AddFlags(cmd)
  
  	cmdutil.AddApplyAnnotationFlags(cmd)
  	cmdutil.AddValidateFlags(cmd)
  	cmdutil.AddGeneratorFlags(cmd, generateversioned.ServiceExternalNameGeneratorV1Name)
  	addPortFlags(cmd)
  	cmd.Flags().String("external-name", "", i18n.T("External name of service"))
  	cmd.MarkFlagRequired("external-name")
  	return cmd
  }
docs: // NewCmdCreateServiceExternalName is a macro command for creating an ExternalName service