@SuppressWarnings("WeakerAccess")
    public String brokerList() {
        final EndPoint endPoint = kafka.advertisedListeners().head();
        return endPoint.host() + ":" + endPoint.port();
    }
This broker's `metadata.broker.list` value.  Example: `localhost:9092`.
<p>
You can use this to tell Kafka producers and consumers how to connect to this instance.
streams/src/test/java/org/apache/kafka/streams/integration/utils/KafkaEmbedded.java