i’ve now created a ticket for OpenSearch to publish the OpenSearch RestHighLevelClient to maven:
https://github.com/opensearch-project/OpenSearch/issues/1005
i hope that this can be done soon(-ish) as it’s e.g. also needed for spring-data-elasticsearch to properly support OpenSearch: elastic version/license check in elasticsearch client library · Issue #1880 · spring-projects/spring-data-elasticsearch · GitHub