addAll(list, elements);
    return list;
  }

  public static <E extends @Nullable Object> List<E> copyToList(E[] elements) {
    return copyToList(asList(elements));
  }

  // Clone of Sets.newLinkedHashSet
  public static <E extends @Nullable Object> Set<E> copyToSet(Iterable<? extends E> elements) {
    Set<E> set = new LinkedHashSet<>();
    addAll(set, elements);
    return set;
  }

    LinkedHashSet<Integer> set = Sets.newLinkedHashSet();
    verifyLinkedHashSetContents(set, EMPTY_COLLECTION);
  }

  public void testNewLinkedHashSetFromCollection() {
    @SuppressWarnings("UseCollectionConstructor") // test of factory method
    LinkedHashSet<Integer> set = Sets.newLinkedHashSet(LONGER_LIST);
    verifyLinkedHashSetContents(set, LONGER_LIST);
  }

      }
      return filter(multimap);
    }

    @Override
    public Collection<Integer> createCollection(Iterable<? extends Integer> values) {
      return Sets.newLinkedHashSet(values);
    }
  }

  abstract static class FilteredListMultimapGenerator
      extends TestFilteredMultimapGenerator<ListMultimap<String, Integer>>
      implements TestListMultimapGenerator<String, Integer> {

Map<String, Object> map = CollectionsUtil.newLinkedHashMap();
Set<String> caseInsensitiveSet = new CaseInsensitiveSet<>();

// Java 21 Sequenced Collections support
SequencedCollection<String> sequenced = CollectionsUtil.newLinkedHashSet();
String first = CollectionsUtil.getFirst(sequenced);
String last = CollectionsUtil.getLast(sequenced);
SequencedCollection<String> reversed = CollectionsUtil.reversed(sequenced);

// Specialized collections