public static String buildPopRetryTopicV1(String topic, String cid) {
        return MixAll.RETRY_GROUP_TOPIC_PREFIX + cid + POP_RETRY_SEPARATOR_V1 + topic;
    }
@Test
    public void testBuildPopRetryTopicV1() {
        assertThat(KeyBuilder.buildPopRetryTopicV1(topic, group)).isEqualTo(MixAll.RETRY_GROUP_TOPIC_PREFIX + group + "_" + topic);
    }