I'm trying to partially sync my user mail history by using Google API users.history.list. In the list of changes, I'm getting all user mailbox changes since the last sync(messagesAdded, messagesDeleted, labelsAdded, labelsRemoved events). But as far as I know, folders Spam and Trash have a retention period(~30days), which means files that presents in these folders longer than 30 days will be automatically deleted by Google. I'm not sure what events I should expect in such cases.