Suppose I have the following document in ElasticSearch:

{
  "version": 1,
  "meal": "breakfast"
}

Suppose I run the following code to attempt 2 simultaneous conditional updates to the document, and no error is thrown:

    async function retryScriptOnConflict(source) {
        while (true) {
            try {
                await openSearchClient.update({
                    index: 'testindex',
                    id: 12345,
                    body: {
                        script: {
                            lang: "painless",
                            source: source
                        }
                    }
                });
                return;
            } catch (error) {
                if (error.meta && error.meta.body && error.meta.body.error.type === 'version_conflict_engine_exception') {
                    continue;
                } else {
                    throw err;
                }
            }
        }
    }
    const promise2 = retryScriptOnConflict('if (ctx._source.version < 3) {ctx._source.meal = "dinner"; ctx._source.version = 3}');
    const promise1 = retryScriptOnConflict('if (ctx._source.version < 2) {ctx._source.meal = "lunch"; ctx._source.version = 2}');
    await promise1;
    await promise2;

If I check the document again an hour later, and nobody else changed it since, is it guaranteed that no matter what order the requests executed in, the document will contain:

{
  "version": 3,
  "meal": "dinner"
}

?

i.e. is it guaranteed that the right update wins?