How to create Data Links in NodeGraph panel?

Hi, I’m using NodeGraph panel with Nodegraph-API Datasource. Lately I’ve seen in documentation: Node graph | Grafana documentation that there is possibility to nest data links into node data (demo gif). I can see this also when I connect to Grafana TestData datasource, but I don’t understand how it’s done.

I found another post on this topic here:

/t/missing-documentation-on-how-to-achieve-data-links-in-the-nodes-and-expanding-hidden-nodes-for-nodegraph-plugin/88306

and issue on Github Add Node Graph Data Link · Issue #82739 · grafana/grafana · GitHub but both without any response. Help, please.

Test data link in Nodegraph from TestData datasource:
image

Nodegraph data as table from TestData datasource: