Missing Diagram examples

Hi,

I am desperately searching for the examples that are mentioned under https://jetbrains.github.io/MPS-extensions/extensions/diagrams/ namely InstanceConfiguration and Statemachine. 

(I've got a couple sample projects from https://github.com/JetBrains/MPS/tree/master/samples and the mbeddr site but they are not there)

I am obviously trying to understand the diagram plugin/language but I could not locate the mentioned examples to assist me (and there is seemingly no documentation for this particular plugin)

The only thing I found is a small tutorial through mbeddr on dslfoundry but it wasn't that helpful in my case.

I might just be blind or missed something but a nod into the right direction would be appreciated.