MovePage::moveSubpagesIfAllowed.
* The MWNamespace class is deprecated. Use MediaWikiServices::getNamespaceInfo.
* (T62260) Hard deprecate Language::getExtraUserToggles() method.
MovePage::moveSubpagesIfAllowed.
* The MWNamespace class is deprecated. Use MediaWikiServices::getNamespaceInfo.
* (T62260) Hard deprecate Language::getExtraUserToggles() method.