Hello,
There is currently a patch https://gerrit.wikimedia.org/r/c/mediawiki/core/+/732429/ in the works that will introduce a slight breaking change to WikiPage. It removes three public functions that weren't intended to be public to begin with: WikiPage::insertNullProtectionRevision, ::protectDescription, and ::protectDescriptionLog.
The only known external usage of these methods have a patch https://gerrit.wikimedia.org/r/c/mediawiki/extensions/Translate/+/734727 up, but please be on the lookout if any of your code happens to use them.
Cheers,