How can I get "All Authenticated Users" in PowerShell?

Hi, I'm writing PowerShell script to set permissions to certain services.
When you're using Central Administration to set them, you can see dialog "Select People and Groups".
When you select category "All Users" you can see among all other groups - "All Authenticated Users".

My question is how can I get that group ("All Authenticated Users") in PowerShell (using New-SPClaimsPrincipal cmdlet)?