The p2 Update sites listed above (since 0.13.0) contain a japicmp report against the last released version to make it easier to identify API changes. The Eclipse LSP4J project uses Semantic Versioning ...
Caution! At the moment, there is no Obsidian API for working with the graph. So I did a bit of reverse engineering and found this method. Since this is not part of the public API, I have no confidence ...