VS template parameters: Get partial project name

I have a multi-project solution template. I've created it using this guide.

My solution is generating multi-platform projects with a central shared project:

• MyProject.Shared
• MyProject.UWP
• MyProject.Droid
• etc.

The problem is that when I use $safeprojectname$.Shared in the csproj file of the individual projects (let's say in the UWP one) in order to add a reference to the shared project, what gets generated is MyProject1.UWP.Shared instead of MyProject1.Shared.

How do I refer to the shared project name / solution name from the individual projects?

P.S. There is the $SpecificSolutionName$ parameter, but that only works if the user checked the Create solution directory option, not good enough for me.

TL;DR

How do I get partial project name from parameter?

$ext_safeprojectname$ does the trick.

(credit)