Map<String, Integer> map =
        ImmutableSortedMap.of("one", 1, "two", 2, "three", 3).tailMap("three", false);
    assertThat(map.entrySet()).containsExactly(immutableEntry("two", 2));
  }

  public void testSubMapExclusiveExclusive() {
    Map<String, Integer> map =
        ImmutableSortedMap.of("one", 1, "two", 2, "three", 3).subMap("one", false, "two", false);
    assertThat(map.entrySet()).containsExactly(immutableEntry("three", 3));
  }