Multiset<String[]> expected = HashMultiset.create();
    expected.add(array);
    assertEquals(expected, multiset);
  }

  public void testCreation_arrayContainingOnlyNull() {
    @Nullable String[] array = new @Nullable String[] {null};
    assertThrows(NullPointerException.class, () -> ImmutableMultiset.copyOf((String[]) array));
  }

    Multiset<String[]> expected = HashMultiset.create();
    expected.add(array);
    assertEquals(expected, multiset);
  }

  public void testCreation_arrayContainingOnlyNull() {
    @Nullable String[] array = new @Nullable String[] {null};
    assertThrows(NullPointerException.class, () -> ImmutableMultiset.copyOf((String[]) array));
  }

    Multiset<String[]> expected = HashMultiset.create();
    expected.add(array);
    assertEquals(expected, multiset);
  }

  public void testCreation_arrayContainingOnlyNull() {
    String[] array = new String[] {null};
    assertThrows(NullPointerException.class, () -> ImmutableSortedMultiset.copyOf(array));
  }

  public void testCopyOf_collection_empty() {