Starting example of cluster planarization layout

[hax scramper]

I'm looking for a starting example for use of `ClusterPlanarizationLayout` in order to understand how to properly use this algorithm. Ideally, I would like to see the code of the layout presented in the preprint paper (similar to the ER diagram and Unix history graphs).

Before finding this mailing list, I created the GitHub issue https://github.com/ogdf/ogdf/issues/83 where I described my current attempts in more details (including one example I've found on this mailing list), but they all end in some form of assertion error or segmentation fault, which makes them rather unhelpful.

So to summarize: I'm looking for any sort of clustered graph layout example, ideally from the paper.

Thanks in advance for your time.