MediaWiki's PHPCS plugin requires documentation comments on all
properties, unless those properties are typed.
This has potential to introduce bugs – in particular, because typed
properties without a default value will throw an exception if their
value is accessed before it's defined, while previously they defaulted
to null. I fixed this when I found it (making them nullable and null
by default), but I may have missed some cases.
Change-Id: If5b1f4d542ce3e1b69327ee4283f7c3e133a62a0
For automatic topic subscriptions, I plan to introduce a third
subscription state to indicate them. This patch includes minor tweaks
I wanted to add while working on that:
* Introduce constants instead of numbers
* Remove a TODO that doesn't seem like a good idea any more
* Remove a `"length": 1` on sub_state that did not do anything
(but it might have been meant to indicate that it was supposed
to be a boolean, which would be wrong)
Bug: T284836
Change-Id: I6e6096968ad38510102287bccd349090b6ca4280
