As the other comment already stated: it’s extremely complicated and, in my experience, causes weird splits between client and server logic. Maybe I completely misunderstood the idea, but it seems like every use case requires some code in the server to do all the traversing, which also means, that every use case needs to have logic added at both ends of the conversation, which kind of defeats the purpose of loose coupling.

All that may dissolve itself if you’re having hundreds or thousands of different clients and use cases, that all boil down to a relatively small set of traversing methods in the server, but who actually has that many clients/use cases?

It all seems like it’s again one of those “but Google does!!!” technologies that simply don’t make sense for 99% of projects.