public Map<String, String> clientLevelTagMap() {
        final Map<String, String> tagMap = new LinkedHashMap<>();
        tagMap.put(CLIENT_ID_TAG, clientId);
        return tagMap;
    }
@Test
    public void shouldGetClientLevelTagMap() {
        final Map<String, String> tagMap = streamsMetrics.clientLevelTagMap();

        assertThat(tagMap.size(), equalTo(1));
        assertThat(tagMap.get(StreamsMetricsImpl.CLIENT_ID_TAG), equalTo(CLIENT_ID));
    }