### Question:
RqueueConfig { public String getLockKey(String key) { return prefix + lockKeyPrefix + key; }  String getQueuesKey(); String getQueueName(String queueName); String getDelayedQueueName(String queueName); String getDelayedQueueChannelName(String queueName); String getProcessingQueueName(String queueName); String getProcessingQueueChannelName(String queueName); String getLockKey(String key); String getQueueStatisticsKey(String name); String getQueueConfigKey(String name);  }### Answer:
@Test public void getLockKey() { assertEquals("__rq::lock::test", rqueueConfigVersion1.getLockKey("test")); assertEquals("__rq::lock::test", rqueueConfigVersion2.getLockKey("test")); assertEquals("__rq::lock::test", rqueueConfigVersion2ClusterMode.getLockKey("test")); }