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

[source, js]
----
const response = await client.ingest.simulate({
  pipeline: {
    description: "parse multiple patterns",
    processors: [
      {
        grok: {
          field: "message",
          patterns: ["%{FAVORITE_DOG:pet}", "%{FAVORITE_CAT:pet}"],
          pattern_definitions: {
            FAVORITE_DOG: "beagle",
            FAVORITE_CAT: "burmese",
          },
        },
      },
    ],
  },
  docs: [
    {
      _source: {
        message: "I love burmese cats!",
      },
    },
  ],
});
console.log(response);
----