This category may not be up to date; it may not show all extensions that use this hook. You can view this MediaWiki Code search query to see the most up-to-date version of all extensions that use this hook.
The WatchedItemQueryServiceExtensions category contains pages on extensions that use the WatchedItemQueryServiceExtensions hook.
Pages in category "WatchedItemQueryServiceExtensions extensions"
This category contains only the following page.