Some software, like GoToSocial, expose replies as ActivityPub
Collections, but do not expose any item array directly in the object,
causing validation to fail via the ObjectID validator. Now, Pleroma will
drop that field in this situation too.
Notes:
- QuestionValidator didn't have a :name field but that seems like a mistake
- `_fields` functions can't inherit others because of some Validators
- bto/bcc fields were absent in activities, also seems like a mistake
(Well IIRC we don't or barely support bto/bcc anyway)
Hélène
Haelwenn (lanodan) Monnier
Sean King