* @param <E> the element type of {@link SynchronousQueue}
     * @return a new instance of {@link SynchronousQueue}
     * @see SynchronousQueue#SynchronousQueue()
     */
    public static <E> SynchronousQueue<E> newSynchronousQueue() {
        return new SynchronousQueue<>();
    }

    /**
     * Creates and returns a new instance of {@link SynchronousQueue}.
     *
     * @param <E> the element type of {@link SynchronousQueue}