@BeforeEach
    public void setUp() throws Exception {
        super.init();
        metricApi  = (SimpleMetricConsumer) new JdiscMetricsFactory(metricManager.get()).newInstance();
    }
Functional test for simple metric implementation.

@author Steinar Knutsen
container-core/src/test/java/com/yahoo/metrics/simple/MetricsTest.java