- [ ] some create endpoints are documented with status 200 but actual it's a 201 status code - [ ] e.g. Activity should include nullable fields CreatedAt | string -- | -- Description | string End | string ID | integer Start | string UpdatedAt | string UserID | integer CreatedAt | string -- | -- Description | string End | string - null ID | integer Start | string (or even better date-time?) - null UpdatedAt | string UserID | integer