Linker::link() and Linker::linkKnown() functions are deprecated as of MediaWiki 1.28, and the new LinkRenderer is preferred instead.
https://doc.wikimedia.org/mediawiki-core/master/php/classLinker.html
./CentralNotice/includes/BannerRenderer.php: return Linker::link( ./CentralNotice/includes/CNCampaignPager.php: return Linker::link(