"Model Comparison", "Diff/Merge", or "Capella Diff"

I am using Capella 6.1, but I cannot find any of those “Model Comparison”, “Diff/Merge”, or “Capella Diff” from Window → Perspective → Open Perspective → Other….

I am using Help → About Capella → Installation Details → Installed Software, but I cannot find any of those from the site https://mbse-capella.org/addons.html

Does anyone use Capella diff tools?

Can you do something like that?