@Override
    public TopicList fetchAllTopicList() throws RemotingException, MQClientException, InterruptedException {
        return this.defaultMQAdminExtImpl.fetchAllTopicList();
    }
@Test
    public void testFetchAllTopicList() throws RemotingException, MQClientException, InterruptedException {
        TopicList topicList = defaultMQAdminExt.fetchAllTopicList();
        assertThat(topicList.getTopicList().size()).isEqualTo(2);
        assertThat(topicList.getTopicList()).contains("topic_one");
    }