Is there any helper class or utility library available to build query DSL for Rest API

I am using Jest Java library to communicate with Elasticsearch. Jest takes care of transport layer. To build query DSL,Is there any helper class or utility library available?

Regards
Ganesh

We expect to build one to pair with the new low level REST client, essentially a high level REST client. But we haven't built it yet. There are other helpers, but none that I know of that target JVM languages in general.