@Override
  public void reset() {
    value.clear();
    dirty.reset();
  }
@Test
  public void testReset() {
    HistogramCell cell = new HistogramCell(KV.of(MetricName.named("hello", "world"), bucketType));
    cell.update(2);
    Assert.assertEquals(1, cell.getCumulative().getTotalCount());
    Assert.assertNotEquals(cell.getDirty(), new DirtyState());

    cell.reset();
    assertThat(cell.getCumulative(), equalTo(HistogramData.linear(0, 10, 100)));
    assertThat(cell.getDirty(), equalTo(new DirtyState()));
  }