How to use the redislite.client.Redis.dbfilename function in redislite

This function does not return any values.
    """
    global original_classes
    global Redis_Patched

    if Redis_Patched:
        logger.info('redis.Redis class has already been patched.')
        return

    if dbfile:
        if dbfile == os.path.basename(dbfile):
            dbfile = os.path.join(os.getcwd(), dbfile)
        Redis.dbdir = os.path.dirname(dbfile)
        Redis.dbfilename = os.path.basename(dbfile)
        Redis.settingregistryfile = os.path.join(
            Redis.dbdir, Redis.dbfilename + '.settings'
        )

    original_classes['Redis'] = redis.Redis
    redis.Redis = Redis
    Redis_Patched = True

Returns:
        This function does not return any values.
    """
    global original_classes
    global Redis_Patched

    if Redis_Patched:
        logger.info('redis.Redis class has already been patched.')
        return

    if dbfile:
        if dbfile == os.path.basename(dbfile):
            dbfile = os.path.join(os.getcwd(), dbfile)
        Redis.dbdir = os.path.dirname(dbfile)
        Redis.dbfilename = os.path.basename(dbfile)
        Redis.settingregistryfile = os.path.join(
            Redis.dbdir, Redis.dbfilename + '.settings'
        )

    original_classes['Redis'] = redis.Redis
    redis.Redis = Redis
    Redis_Patched = True