### Question:
MetricManager { public static Counter getCounter(String group, MetricName name) { IMetricManager manager = getIMetricManager(); return manager.getCounter(group, name); }  static Counter getCounter(String group, MetricName name); static BucketCounter getBucketCounters(String group, MetricName name); static Compass getCompass(String group, MetricName name); static void register(String group, MetricName name, Metric metric); @SuppressWarnings("unchecked") static IMetricManager getIMetricManager();  }### Answer:
@Test public void testNopCounter() { Counter counter = MetricManager.getCounter("test", MetricName.build("test2")); counter.inc(); Assertions.assertEquals(0, counter.getCount()); }