public Map<Uuid, KafkaFuture<Void>> topicIdValues() {
        return topicIdFutures;
    }
Use when {@link Admin#deleteTopics(TopicCollection, DeleteTopicsOptions)} used a TopicIdCollection
@return a map from topic IDs to futures which can be used to check the status of
individual deletions if the deleteTopics request used topic IDs. Otherwise return null.
clients/src/main/java/org/apache/kafka/clients/admin/DeleteTopicsResult.java