1{
2  "indices.upgrade": {
3    "url_params": {
4      "allow_no_indices": "__flag__",
5      "expand_wildcards": [
6        "open",
7        "closed",
8        "hidden",
9        "none",
10        "all"
11      ],
12      "ignore_unavailable": "__flag__",
13      "wait_for_completion": "__flag__",
14      "only_ancient_segments": "__flag__"
15    },
16    "methods": [],
17    "patterns": [],
18    "documentation": "https://www.elastic.co/guide/en/elasticsearch/reference/master/indices-upgrade.html"
19  }
20}
21