I need to do something specific in my `save_post` callback for bulk and/or quick edits, so how do I check the nonce for that? I can only find `_wpnonce` in the `edit.php` html source, but can't find an action to match it with. I also tried `check_admin_referrer()` (no arguments) but it fails.

1. What nonce whould I check for? OR
2. Should I check for something else in `save_post` to know it's being fired from a

a. bulk edit or

b. quick edit action? I read that `DOING_AJAX` is there for quick edit, but is that enough on its own? what about for bulk edit?