How to use the lastversion.utils.download_file function in lastversion

args.shorter_urls, args.major)
    except (ApiCredentialsError, BadProjectError) as error:
        sys.stderr.write(str(error) + os.linesep)
        sys.exit(4)

    if res:
        # download command
        if args.action == 'download':
            if args.format == 'source':
                # there is only one source, but we need an array
                res = [res]
            for url in res:
                log.info("Downloading {} ...".format(url))
                # there can be many assets, so we do not "rename" them
                # there can be only one source, so we allow passing custom filename for it
                download_file(url, args.download if args.format == 'source' else None)
            sys.exit(0)

        if args.action == 'install':
            rpms = [asset for asset in res['assets'] if asset.endswith('.rpm')]
            if not rpms:
                log.error('No assets found to install')
                sys.exit(1)
            # prevents downloading large packages if we already have newest installed
            # consult RPM database  for current version
            installed_version = rpm_installed_version(args.repo)
            if installed_version is False:
                log.warning('Please install lastversion using YUM or DNF so it can check current '
                            'program version. This is helpful to prevent unnecessary downloads')
            if installed_version and Version(installed_version) >= Version(res['version']):
                log.warning('Newest version {} is already installed'.format(installed_version))
                sys.exit(0)