How to access unique component ID

[fanckush]

if I remember correctly, in vue 2 we used to have

this.uid // or this._uid

how can I get this same value with script setup in vue 3

<script setup>
const uid = // ... ?
</script>

[fanckush]

read a bit more, turns out we are not supposed to use _uid as it's internal and should instead just generate our own unique id using a utility for example