How to use the lastversion.HolderFactory.HolderFactory function in lastversion

repo_data = {}
    if repo.endswith('.yml'):
        with open(repo) as fpi:
            repo_data = yaml.safe_load(fpi)
            if 'repo' in repo_data:
                if 'nginx-extras' in repo:
                    repo_data['module_of'] = 'nginx'
                name = os.path.splitext(os.path.basename(repo))[0]
                if 'module_of' in repo_data:
                    name = '{}-module-{}'.format(repo_data['module_of'], name)
                repo = repo_data['repo']
                repo_data['name'] = name

    # find the right hosting for this repo
    project_holder = HolderFactory.get_instance_for_repo(repo)

    # we are completely "offline" for 1 hour, not even making conditional requests
    # heuristic=ExpiresAfter(hours=1)   <- make configurable
    with CacheControl(project_holder, cache=FileCache(cache_dir)) as s:
        release = s.get_latest(pre_ok=pre_ok, major=major)
    s.close()

    # bail out, found nothing that looks like a release
    if not release:
        return None

    version = release['version']
    tag = release['tag_name']

    # return the release if we've reached far enough:
    if output_format == 'version':