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

# --download is legacy flag to specify download action or name of desired download file
    # --download == None indicates download intent where filename is based on upstream
    if args.action == 'download':
        if args.download is False:
            args.download = None

    if args.download is not False:
        args.action = 'download'
        if args.format != 'assets':
            args.format = 'source'

    # other action are either getting release or doing something with release (extend get action)
    try:
        res = latest(args.repo, args.format, args.pre, args.filter,
                     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)

self.headers.update({
            'Accept': 'application/vnd.github.v3+json'
        })
        if self.api_token:
            log.info('Using API token.')
            self.headers.update({'Authorization': "token {}".format(self.api_token)})
        if self.hostname != self.DEFAULT_HOSTNAME:
            self.api_base = 'https://{}/api/v3'.format(self.hostname)
        else:
            self.api_base = 'https://api.{}'.format(self.DEFAULT_HOSTNAME)
        if '/' not in repo:
            r = self.get(
                '{}/search/repositories?q={}+in:name'.format(self.api_base, repo))
            data = r.json()
            if not data['items']:
                raise BadProjectError(
                    'No project found on GitHub for search query: {}'.format(repo)
                )
            self.repo = data['items'][0]['full_name']
        else:
            self.repo = repo
        self.rate_limited_count = 0