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

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