This addresses this pull request:
I apologize for the delay.
Documented DirectRestService usage in the user documentation.
Isn't it easier to have an async interface, just like GWT-RPC, and have the generator checking if they are consistent with the server interface? The async interface can even be automatically generated.
I believe no.
Because then you need the tooling to integrate with your IDE, or your build process, and also you get one extra interface for no reason, that has a different signature than the serverside-one.