https://github.com/elastic/elasticsearch/pull/16865 docs: https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-nodes-info.html example: https://github.com/elastic/elasticsearch/blob/master/plugins/ingest-geoip/src/test/resources/rest-api-spec/test/ingest_geoip/10_basic.yaml
