@MapFeature.Require(SUPPORTS_PUT)
  public void testPutIfAbsent_supportedAbsent() {
    assertNull(
        "putIfAbsent(notPresent, value) should return null", getMap().putIfAbsent(k3(), v3()));
    expectAdded(e3());
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testPutIfAbsent_supportedPresent() {
    assertEquals(

000001b0  5c 12 68 08 3c 55 a2 a9  d7 17 03 03 00 35 f4 d9  |\.h.<U.......5..|
000001c0  9f 41 70 39 d4 88 2a 0b  43 c3 78 0f c2 42 48 b8  |.Ap9..*.C.x..BH.|
000001d0  e5 26 ad e3 72 40 66 d7  a0 5e 5e 0c 6a af 1a 47  |.&..r@f..^^.j..G|
000001e0  c6 5f 25 ce c9 13 77 60  8f 6e a7 9f bc e3 f9 58  |._%...w`.n.....X|
000001f0  9c 12 cc                                          |...|
>>> Flow 4 (server to client)

000003a0  f5 0d fa 37 3d b8 c6 86  cb 57 71 a8 c6 f8 74 cb  |...7=....Wq...t.|
000003b0  c0 17 03 03 00 45 67 fe  1b 83 1a bf ac 3b ee 0f  |.....Eg......;..|
000003c0  31 35 da 42 6c e3 3f 14  63 4a f3 5b 5b 02 76 c8  |15.Bl.?.cJ.[[.v.|
000003d0  21 84 7e 11 42 e3 8c e7  b6 7c 1d ba 41 ec dd 68  |!.~.B....|..A..h|
000003e0  73 4a 1b c5 bc 11 fa 22  33 9b 51 7d f0 27 88 4a  |sJ....."3.Q}.'.J|

00000040  00 00 00 00 00 00 00 00  00 00 00 00 13 03 00 00  |................|
00000050  4f 00 2b 00 02 03 04 00  33 00 45 00 17 00 41 04  |O.+.....3.E...A.|
00000060  d1 56 18 67 59 a5 e1 ed  99 0f ca e5 6b 5f e3 d9  |.V.gY.......k_..|
00000070  e3 fd e6 a2 50 93 bf 87  85 60 e7 7f 0b a0 96 c4  |....P....`......|
00000080  29 55 63 de fe 6b 75 99  b2 a6 75 92 61 d0 96 19  |)Uc..ku...u.a...|

00000110  3f a8 b3 c7 5b 7b b1 f0  5d 55 67 ed af 87 50 16  |?...[{..]Ug...P.|
00000120  ad d9 f1 af d2 3c 18 83  52 d5 3b e3 6d 7e ab 9a  |.....<..R.;.m~..|
00000130  33 cd 2c e7 f4 18 84 3a  db 8b 73 d2 89 45 39 cf  |3.,....:..s..E9.|
00000140  f0 19 78 ab 20 b6 81 3c  3b b5 55 2c c1 6d 6f d8  |..x. ..<;.U,.mo.|
00000150  52 1f 90 b5 ed eb e3 0c  35 40 16 ff f3 15 06 4e  |R.......5@.....N|
00000160  7e 98 3b f7 43 f9 98 80  84 36 1c 63 a0 3c 4b 57  |~.;.C....6.c.<KW|

000002d0  80 f2 60 32 0f af 6f d3  03 db 28 c1 33 18 1c 5d  |..`2..o...(.3..]|
000002e0  71 fd 2a 24 f9 3c 4d 76  ca e3 93 8d 25 08 04 00  |q.*$.<Mv....%...|
000002f0  80 23 e3 34 5f 28 df b8  c9 fd 39 35 a9 bb 14 f9  |.#.4_(....95....|
00000300  05 77 09 6f 2f e5 91 07  c3 6f cd 57 2a de 7e 93  |.w.o/....o.W*.~.|
00000310  b8 9c 49 09 eb 81 45 d8  6a ff df da 06 e3 26 55  |..I...E.j.....&U|
00000320  36 7e c9 4c 7b 6e 23 13  81 24 b2 a7 6c f6 f3 fc  |6~.L{n#..$..l...|

      E e1, E e2, E e3, E e4, E e5) {
    return copyOf(Ordering.natural(), Arrays.asList(e1, e2, e3, e4, e5));
  }

  /**
   * Returns an immutable sorted multiset containing the given elements sorted by their natural
   * ordering.
   *
   * @throws NullPointerException if any element is null
   */
  public static <E extends Comparable<? super E>> ImmutableSortedMultiset<E> of(

  }

  public void testEntrySet_contains_count0() {
    assertFalse(
        "multiset.entrySet() contains [missing, 0]",
        getMultiset().entrySet().contains(Multisets.immutableEntry(e3(), 0)));
  }

  public void testEntrySet_contains_nonentry() {
    assertFalse(
        "multiset.entrySet() contains a non-entry", getMultiset().entrySet().contains(e0()));
  }

  public void testEntrySet_twice() {

  }

  public void testEntrySet_contains_count0() {
    assertFalse(
        "multiset.entrySet() contains [missing, 0]",
        getMultiset().entrySet().contains(Multisets.immutableEntry(e3(), 0)));
  }

  public void testEntrySet_contains_nonentry() {
    assertFalse(
        "multiset.entrySet() contains a non-entry", getMultiset().entrySet().contains(e0()));
  }

  public void testEntrySet_twice() {

00000070  1b ad d9 c4 dc 4a 61 c6  12 5c 22 bf 1e 2f 59 14  |.....Ja..\"../Y.|
00000080  03 03 00 01 01 17 03 03  00 17 0f a4 05 81 10 48  |...............H|
00000090  c7 b7 78 9b 56 14 6c 9f  55 28 e3 4c 42 80 cc 1c  |..x.V.l.U(.LB...|
000000a0  31 17 03 03 01 50 0d af  3b 08 02 84 89 42 b5 75  |1....P..;....B.u|
000000b0  c5 8f 9f c2 b1 dc cb 7c  6a d5 31 41 9a 16 8f fa  |.......|j.1A....|