Asset package folder installation location

When creating a package for sale on the asset store, using the new workflow for creating a package, the package will be installed to "Library/PackageCache/" under a special name for the immediate folder it's installed to.
If I have some settings that should be saved, how do I get the directory it's installed to, so that I may reference the data file?

 

I found the answer to this, it's described here https://docs.unity3d.com/Manual/upm-assets.html