[Resolved] unable to import library

Hi, just bought the Editor Utilities package, however I can’t figure out how to import the library.

In visual studio, the only autocomplete i have for namespaces is Assets.CGF.Samples.Scripts. Nothing else along those paths exists. Seeing that I want to use something in the CGFEditorUtilitiesClass, I would expect to do something like
using import Assets.CGF.Editor
but I get a compiler error in unity:
The type or namespace nameEditor’ does not exist in the namespace Assets.CGF'. Are you missing an assembly reference?

Is there something I have to do after importing the utilities to my project/Assets folder?