Is a snake's venom dealt to itself?

Hello Everyone,

If a snake is bitten by itself or say another of the same kind, is that venom going to kill the snake? Or are they immune to their own type of venom?

Wikipedia on venom immunity:

“The question whether individual snakes are immune to their own venom has not yet been definitively settled, though there is a known example of a cobra which self-envenomated, resulting in a large abscess requiring surgical intervention but showing none of the other effects that would have proven rapidly lethal in prey species or humans.”