He may be partly right. The sample code is 4 years old. But the documentation is recent (at least the url linked by gp) :

After 2021 june 27 : https://web.archive.org/web/20210627204757/https://docs.micr...

Before 2021 june 27 : https://web.archive.org/web/20210414223813/https://docs.micr...