### Question:
MetricsUtil { public static void counterInc(String key) { try { if (CommonParameter.getInstance().isNodeMetricsEnable()) { metricRegistry.counter(key).inc(1L); } } catch (Exception e) { logger.warn("inc counter failed, key:{}", key); } }  static void init(); static Histogram getHistogram(String key); static SortedMap<String, Histogram> getHistograms(String key); static void histogramUpdate(String key, long value); static Meter getMeter(String name); static SortedMap<String, Meter> getMeters(String key); static void meterMark(String key); static void meterMark(String key, long value); static Counter getCounter(String name); static SortedMap<String, Counter> getCounters(String name); static void counterInc(String key); static RateInfo getRateInfo(String key);  }### Answer:
@Test public void testCounterInc() { MetricsUtil.counterInc(test1); }