Composite Aggregation Java API?

Elastic Stack Elasticsearch
1

I like "Composite Aggregation" - good addition and thanks. :+1:
Is there Java API for this? If not, any plan for Transport, Rest Client ... ?

For queries, we are using Transport API (with Elasticsearch 5.6) now and planning to migrate to Rest Client (with Elasticsearch 6.x).

2

I am also very interested in this specifically as I have some complex queries that seem to require this, and I can achieve what I need in the REST api by using composite, but need to leverage through java.