assertThat(atomicTags.computeIfAbsent(String::class) { "b" }).isEqualTo("a")
    assertThat(atomicTags.get()[String::class]).isEqualTo("a")
  }

  @Test
  fun computeIfAbsentWhenDifferentKeyRaceLostDuringCompute() {
    val tags = EmptyTags
    val atomicTags = AtomicReference<Tags>(tags)
    val result =
      atomicTags.computeIfAbsent(String::class) {