See https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CentralNotice/+/724985, an empty patch with just a commit message
https://integration.wikimedia.org/ci/job/mwext-php72-phan-docker/139342/console
```
16:14:20 includes/BannerMessageGroup.php:206 PhanParamSignatureRealMismatchReturnType Declaration of function getMessageGroupStates() should be compatible with function getMessageGroupStates() : \MessageGroupStates (method where the return type in the real signature is '' cannot override method where the return type in the real signature is '\MessageGroupStates') defined in ../../extensions/Translate/messagegroups/MessageGroupOld.php:281
```
caused by {29c1193419b26139d5579537bc51cd227155ee5a} in #mediawiki-extensions-translate by @Nikerabbit