@CollectionSize.Require(absent = CollectionSize.ZERO)
  public void testEquals_otherSetWithDifferentElements() {
    Collection<E> elements = getSampleElements(getNumElements() - 1);
    elements.add(getSubjectGenerator().samples().e3());

    assertFalse(
        "A Set should not equal another Set containing different elements.",
        getSet().equals(MinimalSet.from(elements)));
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  public void testEquals_otherSetWithDifferentElements() {
    Collection<E> elements = getSampleElements(getNumElements() - 1);
    elements.add(getSubjectGenerator().samples().e3());

    assertFalse(
        "A Set should not equal another Set containing different elements.",
        getSet().equals(MinimalSet.from(elements)));
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)

    int size = getNumElements();

    assertThrows(
        NullPointerException.class, () -> multimap().putAll(k3(), Lists.newArrayList(null, v3())));

    /*
     * In principle, a Multimap implementation could add e3 first before failing on the null. But
     * that seems unlikely enough to be worth complicating the test over, especially if there's any
     * chance that a permissive test could mask a bug.
     */
    expectUnchanged();

    return getMultiset().setCount(element, getMultiset().count(element), count);
  }

  private void assertSetCountNegativeOldCount() {
    try {
      getMultiset().setCount(e3(), -1, 1);
      fail("calling setCount() with a negative oldCount should throw IllegalArgumentException");
    } catch (IllegalArgumentException expected) {
    }
  }

  // Negative oldCount.

  public void testEquals_otherListWithDifferentElements() {
    ArrayList<E> other = new ArrayList<>(getSampleElements());
    other.set(other.size() / 2, getSubjectGenerator().samples().e3());
    assertFalse(
        "A List should not equal another List containing different elements.",
        getList().equals(other));
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class MultisetCountTester<E> extends AbstractMultisetTester<E> {

  public void testCount_0() {
    assertEquals("multiset.count(missing) didn't return 0", 0, getMultiset().count(e3()));
  }

  @CollectionSize.Require(absent = ZERO)
  public void testCount_1() {
    assertEquals("multiset.count(present) didn't return 1", 1, getMultiset().count(e0()));
  }

  @CollectionSize.Require(SEVERAL)

  public void testEquals_otherListWithDifferentElements() {
    ArrayList<E> other = new ArrayList<>(getSampleElements());
    other.set(other.size() / 2, getSubjectGenerator().samples().e3());
    assertFalse(
        "A List should not equal another List containing different elements.",
        getList().equals(other));
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)

            X509v3 Basic Constraints: critical
                CA:FALSE
    Signature Algorithm: ED25519
         7e:aa:be:ed:47:4d:b9:2f:fc:ed:7f:5a:fc:6b:c0:05:5b:f5:
         a0:31:fe:86:e3:8e:3f:49:af:6d:d5:ac:c7:c4:57:47:ce:97:
         7d:ab:b8:e9:75:ec:b4:39:fb:c8:cf:53:16:5b:1f:15:b6:7f:
         5a:d1:35:2d:fc:31:3a:10:e7:0c
```

> Observe the `Subject: CN = consoleAdmin` field.

          mapEntry(sampleKeys.e1(), createCollection(sampleValues.e1())),
          mapEntry(sampleKeys.e2(), createCollection(sampleValues.e2())),
          mapEntry(sampleKeys.e3(), createCollection(sampleValues.e3())),
          mapEntry(sampleKeys.e4(), createCollection(sampleValues.e4())));
    }

    @Override
    public Map<K, Collection<V>> create(Object... elements) {

          Multisets.immutableEntry(samples.e0(), 3),
          Multisets.immutableEntry(samples.e1(), 4),
          Multisets.immutableEntry(samples.e2(), 1),
          Multisets.immutableEntry(samples.e3(), 5),
          Multisets.immutableEntry(samples.e4(), 2));
    }

    @Override
    public Set<Multiset.Entry<E>> create(Object... entries) {
      List<Object> contents = new ArrayList<>();