* @param <V> the value type of {@link Hashtable}
     * @return a new instance of {@link Hashtable}
     * @see Hashtable#Hashtable()
     */
    public static <K, V> Hashtable<K, V> newHashtable() {
        return new Hashtable<>();
    }

    /**
     * Creates and returns a new instance of {@link Hashtable}.
     *
     * @param <K> the key type of {@link Hashtable}