Where did the Schema Builder from Laravel above 5.0 go and did it go somewhere?

Question

Laravel

Here https://laravel.com/docs/8.x/schema it writes:

This page does not exist for this version of Laravel but was found in other versions.
5.0
4.2

However here:

https://laravel.com/api/8.x/Illuminate/Database/Sc...

there is documentation.

How can this be?

Should I use this in a working project?

Answer 1

https://laravel.com/docs/8.x/migrations