Open server-based project from Studio command line

How to open project on Groupshare via Studio command line?

I just notice

Task: Open Server Project
Description: Opens a server project in the Projects View.
Usage: SDLTradosStudio.exe /openServerProject <project URI>
Arguments:
 /openServerProject The URI of a Server Project to open.

But what does <project URI> look like?

It's better give a sample.