### Question:
ConsumerGroupUtil { public static String getBroadcastConsumerName(String consumerGroupName, String ip, long consumerId) { return String.format("%s_%s-%s", consumerGroupName, ip, consumerId); }  static String getBroadcastConsumerName(String consumerGroupName, String ip, long consumerId); static String getOriginConsumerName(String consumerGroupName);  }### Answer:
@Test public void getBroadcastConsumerNameTest() { assertEquals("1_2-3", ConsumerGroupUtil.getBroadcastConsumerName("1", "2", 3)); }