public static boolean isSystem(String topic, String group) {
        return TopicValidator.isSystemTopic(topic) || isSystemGroup(group);
    }
@Test
    public void testIsSystem_SystemTopicOrSystemGroup_ReturnsTrue() {
        String topic = "FooTopic";
        String group = "FooGroup";
        String systemTopic = TopicValidator.RMQ_SYS_TRANS_HALF_TOPIC;
        String systemGroup = MixAll.CID_RMQ_SYS_PREFIX + group;

        boolean resultTopic = BrokerMetricsManager.isSystem(systemTopic, group);
        assertThat(resultTopic).isTrue();

        boolean resultGroup = BrokerMetricsManager.isSystem(topic, systemGroup);
        assertThat(resultGroup).isTrue();
    }