public LatencyProbe newProbe(String serviceName, String dataStructureName, String methodName) {
        ServiceProbes serviceProbes = getOrPutIfAbsent(
                metricsPerServiceMap, serviceName, metricsPerServiceConstructorFunction);
        return serviceProbes.newProbe(dataStructureName, methodName);
    }
@Test
    public void getProbe() {
        LatencyProbe probe = plugin.newProbe("foo", "queue", "somemethod");
        assertNotNull(probe);
    }