How can I sanitize pasting in paragraph?

[adaptedbee]

Hi!
I need some way to transform html content, when it is pasted in paragraph.
So I tried to use sanitize field for that.

Firstly, I found out that SanitizerConfig seems to have some problem with typing (see my issue). I need to use function like b: el => el.id !== '';, but it didn't work.

Secondly, I tried to use some booleans and objects for sanitize, but it didn't work either.

Than, I explored that repository and found out that sanitize field seems not to be used anywhere.
(I tried to comment it in types, than did lint / build:test and nothing was broken.

So, the questions are:

1. Is sanitize field really not actual anymore?
2. Do we have any alternatives?
   (I tried onPaste function too, but it seems that it's not being called, like here)