@Override
    public MetricType getType() {
        return MetricType.GAUGE_UNKNOWN;
    }
@Test
    public void set() {
        UnknownGauge gauge = new UnknownGauge("bar");
        gauge.set(URI.create("baz"));
        assertThat(gauge.getValue()).isEqualTo(URI.create("baz"));
        gauge.set(URI.create("fizzbuzz"));
        assertThat(gauge.getValue()).isEqualTo(URI.create("fizzbuzz"));
        assertThat(gauge.getType()).isEqualTo(MetricType.GAUGE_UNKNOWN);
    }