Simple way to busy-wait on async REST requests

[aerofeev2k]

The new async REST kinda breaks the simplicity of making calls to the webapp via curl. All those nice and concise examples scattered all over the Wiki are broken because curl won't wait and won't cleanup.

I see that RuntimeEnvironment.java has all the right client-side code implemented, so OpenGrok to OpenGrok calls are golden, but what should mere mortals do?

Is there perhaps quick and easy utility that's packaged with OpenGrok and that can convert async REST API back to the sync semantics?