// This file is autogenerated, DO NOT EDIT
// Use `node scripts/generate-docs-examples.mjs` to generate the docs examples

[source, js]
----
const response = await client.updateByQuery({
  index: "my-index-000001",
  refresh: "true",
  slices: 5,
  script: {
    source: "ctx._source['extra'] = 'test'",
  },
});
console.log(response);
----
