public List<TopicInfoList.TopicInfo> getTopicInfo() {
        if (CollectionUtils.isEmpty(data)) {
            return Lists.newArrayList();
        }
        return data.get(0).getTopicInfo();
    }
json class for topic info list from master http service.
inlong-tubemq/tubemq-manager/src/main/java/org/apache/inlong/tubemq/manager/service/tube/TubeHttpTopicInfoList.java