* Creates and returns a new instance of {@link ConcurrentSkipListSet}.
     *
     * @param <E> the element type of {@link ConcurrentSkipListSet}
     * @return a new instance of {@link ConcurrentSkipListSet}
     * @see ConcurrentSkipListSet#ConcurrentSkipListSet()
     */
    public static <E> ConcurrentSkipListSet<E> newConcurrentSkipListSet() {
        return new ConcurrentSkipListSet<>();
    }

    /**

              @Override
              public SortedSet<String> create(String[] elements) {
                return new ConcurrentSkipListSet<>(MinimalCollection.of(elements));
              }
            })
        .named("ConcurrentSkipListSet, natural")
        .withFeatures(
            SetFeature.GENERAL_PURPOSE,
            CollectionFeature.SERIALIZABLE,

              @Override
              public SortedSet<String> create(String[] elements) {
                return new ConcurrentSkipListSet<>(MinimalCollection.of(elements));
              }
            })
        .named("ConcurrentSkipListSet, natural")
        .withFeatures(
            SetFeature.GENERAL_PURPOSE,
            CollectionFeature.SERIALIZABLE,