First, great job using the search feature and not just making a new post!
Second, well, it's not a thing because you haven't made it one. You don't need code to make this a thing. It would just become a burden to the GMs. You just need to write a will and you need to pay someone to execute your will.
No need for code.
We also have marriage licenses which allow you to legally have someone who takes your shit when you die. Just saying. You want something that is basically a role play thing-- go role play and make that ish happen yo!
-- S
