SOLVED: Consuming ElasticSearch endpoint behind Basic-Auth with RestHighLevelClient

Hi. I have an ElasticSearch cluster that is behind a proxy configured with Basic Auth. How do I make a call from RestHighLevelClient with credentials? In SpringBoot you usually have to configure a HttpClientContext like this:

public HttpClientContext configuredContext() {
    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    credsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(DEFAULT_USER, DEFAULT_PASS));

    AuthCache authCache = new BasicAuthCache();
    authCache.put(httpHost, new BasicScheme());

    final HttpClientContext context = HttpClientContext.create();
    return context;

but I can't find any fitting parameters on the ClientBuilder or Request for the context.

EDIT: this setup works; thread can be closed

public RestHighLevelClient configuredClient() {
    final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
    credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(DEFAULT_USER, DEFAULT_PASS));

    RestClientBuilder restClientBuilder = RestClient.builder(new HttpHost(host, port, protocol));

    restClientBuilder.setHttpClientConfigCallback(httpClientBuilder ->

    return new RestHighLevelClient(restClientBuilder);

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