Need an example of adding companies to Yandex Direct?

Question

PHP

Hello.
It is necessary to send a request from the site to create a company in Yandex Direct API version 5.
Tokien received it, set everything up, and am working with the sandbox for testing. Here is an excellent class for working with api but for the 4th version, and it seems that it will soon be out of date and disabled.
I found a wrapper for API v5 on the git, but I can’t figure it out and understand how to add a company and ads to a company.
I would be grateful if someone could give me an example of adding a company based on this class.