public static CacheStats empty() {
    return EMPTY_STATS;
  }
@Test
  public void empty() {
    var stats = CacheStats.of(0, 0, 0, 0, 0, 0, 0);
    checkStats(stats, 0, 0, 1.0, 0, 0.0, 0, 0, 0.0, 0, 0, 0.0, 0, 0);

    assertThat(stats).isEqualTo(CacheStats.empty());
    assertThat(stats.equals(null)).isFalse();
    assertThat(stats).isNotEqualTo(new Object());
    assertThat(stats).isEqualTo(CacheStats.empty());
    assertThat(stats.hashCode()).isEqualTo(CacheStats.empty().hashCode());
    assertThat(stats.toString()).isEqualTo(CacheStats.empty().toString());
  }