public KafkaFuture<Map<String, TopicDescription>> allTopicNames() {
        return all(nameFutures);
    }
@return A future map from topic names to descriptions which can be used to check
        the status of individual description if the describe topic request used
        topic names, otherwise return null, this request succeeds only if all the
        topic descriptions succeed
clients/src/main/java/org/apache/kafka/clients/admin/DescribeTopicsResult.java