* @return a new instance of {@link ConcurrentSkipListMap}
     * @see ConcurrentSkipListMap#ConcurrentSkipListMap()
     */
    public static <K, V> ConcurrentSkipListMap<K, V> newConcurrentSkipListMap() {
        return new ConcurrentSkipListMap<>();
    }

    /**
     * Creates and returns a new instance of {@link ConcurrentSkipListMap}.
     *