ImmutableSortedSet.Builder<String> zat =
        ImmutableSortedSet.<String>orderedBy(STRING_LENGTH).add("a", "bb", "dddd", "ccc");
    ImmutableSortedSet<String> sortedSet = zis.combine(zat).build();
    assertThat(sortedSet).containsExactly("a", "bb", "ccc", "dddd").inOrder();
  }

  public void testEquals_bothDefaultOrdering() {
    SortedSet<String> set = of("a", "b", "c");

      val v1Updater = cache.edit("k1")!!
      v1Updater.setString(0, "CCcc")
      v1Updater.setString(1, "DDdd")
      v1Updater.commit()

      cache["k1"]!!.use { snapshot2 ->
        snapshot2.assertValue(0, "CCcc")
        snapshot2.assertValue(1, "DDdd")
      }

      assertThat(inV1.readByte()).isEqualTo('a'.code.toByte())
      assertThat(inV1.readByte()).isEqualTo('a'.code.toByte())