How to set up Yandex Disk PHP API?

Question

PHP

I just can’t figure out the Yandex disk API, my task is to write a simple database backup module.
1.Download from github
https://github.com/jack-theripper/yandex
2. For example https://github.com/jack-theripper/yandex/blob/mast...
where does require_once __DIR__.'/. ./vendor/autoload.php'; ?
downloaded through Composer, slipped phar from https://yadi.sk/d/26YmC3hRByBd7 but nothing happened.
Give me an example or point out where I'm stupid, I've been toiling all day.

Answer 1

after installation via composer
$ composer require arhitector/yandex dev-master
you will have this file in the specified directory.

Answer 2

can anyone have a working examples folder or a live working example?