I did not know that. However, a couple of caveats (from your link):
> This is an experimental feature
> When using this feature, you might experience significant Oracle VM VirtualBox performance degradation on some host systems.
> This is an experimental feature
> When using this feature, you might experience significant Oracle VM VirtualBox performance degradation on some host systems.
https://www.virtualbox.org/manual/ch09.html#hyperv-support