private void assertZeroToZero() {
    assertSetCount(e3(), 0);
  }

  private void assertOneToOne() {
    assertSetCount(e0(), 1);
  }

  private void assertThreeToThree() {
    initThreeCopies();
    assertSetCount(e0(), 3);
  }

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testSetCount_zeroToZero_addSupported() {
    assertZeroToZero();
  }

  private void assertZeroToZero() {
    assertSetCount(e3(), 0);
  }

  private void assertOneToOne() {
    assertSetCount(e0(), 1);
  }

  private void assertThreeToThree() {
    initThreeCopies();
    assertSetCount(e0(), 3);
  }

  @CollectionFeature.Require(SUPPORTS_ADD)
  public void testSetCount_zeroToZero_addSupported() {
    assertZeroToZero();
  }

    disjoint = new Target(disjointList, "disjoint");
    superset = new Target(MinimalCollection.of(e0(), e1(), e2(), e3(), e4()), "superset");
    nonEmptyProperSubset = new Target(MinimalCollection.of(e1()), "subset");
    sameElements = new Target(asList(createSamplesArray()), "sameElements");
    containsDuplicates =
        new Target(MinimalCollection.of(e0(), e0(), e3(), e3()), "containsDuplicates");

    disjoint = new Target(disjointList, "disjoint");
    superset = new Target(MinimalCollection.of(e0(), e1(), e2(), e3(), e4()), "superset");
    nonEmptyProperSubset = new Target(MinimalCollection.of(e1()), "subset");
    sameElements = new Target(asList(createSamplesArray()), "sameElements");
    containsDuplicates =
        new Target(MinimalCollection.of(e0(), e0(), e3(), e3()), "containsDuplicates");

  /** Returns an immutable array containing a single value. */
  public static ImmutableLongArray of(long e0) {
    return new ImmutableLongArray(new long[] {e0});
  }

  /** Returns an immutable array containing the given values, in order. */
  public static ImmutableLongArray of(long e0, long e1) {
    return new ImmutableLongArray(new long[] {e0, e1});
  }

  /** Returns an immutable array containing the given values, in order. */

  public static ImmutableDoubleArray of(double e0) {
    return new ImmutableDoubleArray(new double[] {e0});
  }

  /** Returns an immutable array containing the given values, in order. */
  public static ImmutableDoubleArray of(double e0, double e1) {
    return new ImmutableDoubleArray(new double[] {e0, e1});
  }

  /** Returns an immutable array containing the given values, in order. */

    return new ImmutableIntArray(new int[] {e0, e1, e2});
  }

  /** Returns an immutable array containing the given values, in order. */
  public static ImmutableIntArray of(int e0, int e1, int e2, int e3) {
    return new ImmutableIntArray(new int[] {e0, e1, e2, e3});
  }

  /** Returns an immutable array containing the given values, in order. */

  public void testSingletonMultisetNearby() {
    assertNull(sortedMultiset.headMultiset(e0(), OPEN).lastEntry());
    assertNull(sortedMultiset.tailMultiset(e0(), OPEN).lastEntry());

    assertEquals(a, sortedMultiset.headMultiset(e0(), CLOSED).lastEntry());
    assertEquals(a, sortedMultiset.tailMultiset(e0(), CLOSED).firstEntry());
  }

  @CollectionSize.Require(ONE)
  public void testSingletonMultisetLast() {

      SampleElements<V> sampleValues =
          ((TestMultimapGenerator<K, V, M>) multimapGenerator.getInnerGenerator()).sampleValues();
      return new SampleElements<>(
          mapEntry(sampleKeys.e0(), createCollection(sampleValues.e0())),
          mapEntry(sampleKeys.e1(), createCollection(sampleValues.e1())),
          mapEntry(sampleKeys.e2(), createCollection(sampleValues.e2())),

      SampleElements<V> sampleValues =
          ((TestMultimapGenerator<K, V, M>) multimapGenerator.getInnerGenerator()).sampleValues();
      return new SampleElements<>(
          mapEntry(sampleKeys.e0(), createCollection(sampleValues.e0())),
          mapEntry(sampleKeys.e1(), createCollection(sampleValues.e1())),
          mapEntry(sampleKeys.e2(), createCollection(sampleValues.e2())),