@Test
public void testGetCompositeDistributionSummary() {

    Registry r = NoopRegistry.INSTANCE;
    List<Registry> list = new ArrayList<Registry>();
    list.add(r);
    DistributionSummary t = new CompositeDistributionSummary(r.createId("xx"), list);
    t.record(100);
    Assert.assertEquals(0, t.count());
    Assert.assertEquals(0, t.totalAmount());
}