updates to cached artifacts in the ParserCache, the CDN layer, etc. This is primarily
used by PageUpdater, but also by PageArchive during undeletion, and when importing
revisions from XML. doUpdates() can only be called after prepareUpdate() was used to
updates to cached artifacts in the ParserCache, the CDN layer, etc. This is primarily
used by PageUpdater, but also by PageArchive during undeletion, and when importing
revisions from XML. doUpdates() can only be called after prepareUpdate() was used to