private static java.net.http.HttpClient.Builder newClientBuilder(Options options) {
    return HttpClient.newBuilder()
        .followRedirects(options.isFollowRedirects() ? Redirect.ALWAYS : Redirect.NEVER)
        .connectTimeout(Duration.ofMillis(options.connectTimeoutMillis()));
  }
Creates integer key that represents {@link Options} settings based on {@link
Http2Client#doesClientConfigurationDiffer(Options)} method

@param options value
@return integer key
java11/src/main/java/feign/http2client/Http2Client.java