Why there is no documentation about the @hook/@vue event?

[schirrel]

I just discovered a few minutes that theres a @hook(@vue on vue 3) event that can be used on vue components, and i had to confess that it is extremelly usefull with dynamic components. Such @hook:mounted or @hook:destroyed.
I am curious on why there's no mention of this in the docs, both vue 2 and 3. The only way that shows a bit of it is in the migration guide VNode Lifecycle Events section, but other than that no such a thing is presente
Is this a kindof "easter egg" or a functionality that is no intendeed to be used?

I'de search inside the repo and the documentation and haven't found about this. Maybe it shown on any other way?

[MangoMarcus]

I thought I was going mad when I saw this syntax being used and could find no reference in the docs, seems a strange omission!