public function getOptionParser()
    {
        $parser = parent::getOptionParser();

        $parser->addSubcommand('makedocs', [
            'description' => __('Crawl-generate fresh swagger file system documents for all entries found in the library.')
        ])
        ->addArgument('host', [
            'help' => __("Swagger host FQDN (without protocol) as to be inserted into the swagger doc property 'host'"),
            'required' => true
        ]);

        return $parser;
    }