public interface List<E> extends Collection<E> {

    // [...]

    /**
     * Returns an unmodifiable list containing zero elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @return an empty {@code List}
     *
     * @since 9
     */
    @SuppressWarnings("unchecked")
    static <E> List<E> of() {
        return (List<E>) ImmutableCollections.ListN.EMPTY_LIST;
    }

    /**
     * Returns an unmodifiable list containing one element.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the single element
     * @return a {@code List} containing the specified element
     * @throws NullPointerException if the element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1) {
        return new ImmutableCollections.List12<>(e1);
    }

    /**
     * Returns an unmodifiable list containing two elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the first element
     * @param e2 the second element
     * @return a {@code List} containing the specified elements
     * @throws NullPointerException if an element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1, E e2) {
        return new ImmutableCollections.List12<>(e1, e2);
    }

    /**
     * Returns an unmodifiable list containing three elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the first element
     * @param e2 the second element
     * @param e3 the third element
     * @return a {@code List} containing the specified elements
     * @throws NullPointerException if an element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1, E e2, E e3) {
        return new ImmutableCollections.ListN<>(e1, e2, e3);
    }

    /**
     * Returns an unmodifiable list containing four elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the first element
     * @param e2 the second element
     * @param e3 the third element
     * @param e4 the fourth element
     * @return a {@code List} containing the specified elements
     * @throws NullPointerException if an element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1, E e2, E e3, E e4) {
        return new ImmutableCollections.ListN<>(e1, e2, e3, e4);
    }

    /**
     * Returns an unmodifiable list containing five elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the first element
     * @param e2 the second element
     * @param e3 the third element
     * @param e4 the fourth element
     * @param e5 the fifth element
     * @return a {@code List} containing the specified elements
     * @throws NullPointerException if an element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1, E e2, E e3, E e4, E e5) {
        return new ImmutableCollections.ListN<>(e1, e2, e3, e4, e5);
    }

    /**
     * Returns an unmodifiable list containing six elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the first element
     * @param e2 the second element
     * @param e3 the third element
     * @param e4 the fourth element
     * @param e5 the fifth element
     * @param e6 the sixth element
     * @return a {@code List} containing the specified elements
     * @throws NullPointerException if an element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6) {
        return new ImmutableCollections.ListN<>(e1, e2, e3, e4, e5,
                                                e6);
    }

    /**
     * Returns an unmodifiable list containing seven elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the first element
     * @param e2 the second element
     * @param e3 the third element
     * @param e4 the fourth element
     * @param e5 the fifth element
     * @param e6 the sixth element
     * @param e7 the seventh element
     * @return a {@code List} containing the specified elements
     * @throws NullPointerException if an element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7) {
        return new ImmutableCollections.ListN<>(e1, e2, e3, e4, e5,
                                                e6, e7);
    }

    /**
     * Returns an unmodifiable list containing eight elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the first element
     * @param e2 the second element
     * @param e3 the third element
     * @param e4 the fourth element
     * @param e5 the fifth element
     * @param e6 the sixth element
     * @param e7 the seventh element
     * @param e8 the eighth element
     * @return a {@code List} containing the specified elements
     * @throws NullPointerException if an element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8) {
        return new ImmutableCollections.ListN<>(e1, e2, e3, e4, e5,
                                                e6, e7, e8);
    }

    /**
     * Returns an unmodifiable list containing nine elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the first element
     * @param e2 the second element
     * @param e3 the third element
     * @param e4 the fourth element
     * @param e5 the fifth element
     * @param e6 the sixth element
     * @param e7 the seventh element
     * @param e8 the eighth element
     * @param e9 the ninth element
     * @return a {@code List} containing the specified elements
     * @throws NullPointerException if an element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9) {
        return new ImmutableCollections.ListN<>(e1, e2, e3, e4, e5,
                                                e6, e7, e8, e9);
    }

    /**
     * Returns an unmodifiable list containing ten elements.
     *
     * See <a href="#unmodifiable">Unmodifiable Lists</a> for details.
     *
     * @param <E> the {@code List}'s element type
     * @param e1 the first element
     * @param e2 the second element
     * @param e3 the third element
     * @param e4 the fourth element
     * @param e5 the fifth element
     * @param e6 the sixth element
     * @param e7 the seventh element
     * @param e8 the eighth element
     * @param e9 the ninth element
     * @param e10 the tenth element
     * @return a {@code List} containing the specified elements
     * @throws NullPointerException if an element is {@code null}
     *
     * @since 9
     */
    static <E> List<E> of(E e1, E e2, E e3, E e4, E e5, E e6, E e7, E e8, E e9, E e10) {
        return new ImmutableCollections.ListN<>(e1, e2, e3, e4, e5,
                                                e6, e7, e8, e9, e10);
    }

    // [...]

}