StoppedKamonTimer implements StoppedTimer { @Nullable @Override public String getTag(final String key) { return tags.get(key); } private  StoppedKamonTimer(final String name, final Map<String, String> tags, final long startTimestamp,
            final Map<String, StartedTimer> segments, List<OnStopHandler> onStopHandlers); @Override Duration getDuration(); @Override Map<String, String> getTags(); @Nullable @Override String getTag(final String key); @Override String getName(); @Override String toString();  }
@Test public void getTag() { assertThat(sut.getTag("segment")).isEqualTo("overall"); }