how to recover domain name in ClientAreaPrimarySidebar ?

[Remitur]

Hello.
Using ClientAreaPrimarySidebar (  https://developers.whmcs.com/hooks-reference/client-area-interface/#clientareaprimarysidebar ) I would like to recover domainID (or domain name) when the page is /clientarea.php?action=domaindetails&id=xxx ?

 

For services I know it's possible with:

$service = Menu::context('service');    
$pid = (int) $service->id;

but... how to do it for domains?