I'm currently upgrading our elasticsearch from v2.3.4 to v5.6 and then v6.x.
I'm starting to use the RestHighLevelClient and want to execute a MultiSearchRequest. How can I do this RestHighLevelClient in v5? It looks like the documentation only covers v7 (https://www.elastic.co/guide/en/elasticsearch/client/java-rest/master/java-rest-high-multi-search.html)?
Is this something I have to do via the low level api in these versions?
Thanks for any help offered.