Diagram Diffing example source code

Hello, I would like to build a diffing tool with bpmn-js and was looking at BPMN model diffing | demo.bpmn.io as a starting point. However, I couldn’t find this example’s source code on Github (GitHub - bpmn-io/bpmn-js-examples: Examples how to use bpmn-js). Could you point me in the right direction?

The code of the the demo itself isn’t public but under the hood the diffing uses GitHub - bpmn-io/bpmn-js-differ: A diffing utility for BPMN 2.0 documents.. You can have a look at that. The UI you’d have to build yourself.