GitLabWatcher.getNotifications() doesn't seem to do anything

https://github.com/matrix-org/matrix-hookshot/blob/7ce1fd575347dda306f961b62ed0e4b9bf4b68b3/src/Notifications/GitLabWatcher.ts#L31-L34

What is this function doing?
It's declaring a variable but doesn't use or return it.

Is this a bug or are there side effects which should be documented?

Start with src/Notifications/GitLabWatcher.ts at lines 31-34 and inspect getNotifications() to determine what the declared variable is intended to do. Trace its callers and the surrounding GitLab notification flow; done means the behavior is corrected or its required side effects are clearly documented, with relevant tests updated.

Written by the indexing model from the issue text.