/// <summary>
        ///   <para>The color scheme used by the widget.</para>
        /// </summary>
        /// <param name="widget">Widget to call method on.</param>
        /// <param name="colorScheme">Color scheme of widget.</param>
        /// <returns>Reference to the current widget.</returns>
        /// <exception cref="ArgumentNullException">If <paramref name="widget"/> is a <c>null</c> reference.</exception>
        /// <seealso cref="IFacebookFacepileWidget.ColorScheme(string)"/>
        public static IFacebookFacepileWidget ColorScheme(this IFacebookFacepileWidget widget, FacebookColorScheme colorScheme)
        {
            Assertion.NotNull(widget);

            return(widget.ColorScheme(colorScheme.ToString().ToLowerInvariant()));
        }
        /// <summary>
        ///   <para>The height of the widget in pixels.</para>
        /// </summary>
        /// <param name="widget">Widget to call method on.</param>
        /// <param name="height">Height of widget.</param>
        /// <returns>Reference to the current widget.</returns>
        /// <exception cref="ArgumentNullException">If <paramref name="widget"/> is a <c>null</c> reference.</exception>
        /// <seealso cref="IFacebookFacepileWidget.Height(string)"/>
        public static IFacebookFacepileWidget Height(this IFacebookFacepileWidget widget, short height)
        {
            Assertion.NotNull(widget);

            return(widget.Height(height.ToString(CultureInfo.InvariantCulture)));
        }
        /// <summary>
        ///   <para>Controls the size of the photos shown in the widget.</para>
        /// </summary>
        /// <param name="widget">Widget to call method on.</param>
        /// <param name="size">Size of photos.</param>
        /// <returns>Reference to the current widget.</returns>
        /// <exception cref="ArgumentNullException">If <paramref name="widget"/> is a <c>null</c> reference.</exception>
        /// <seealso cref="IFacebookFacepileWidget.PhotoSize(string)"/>
        public static IFacebookFacepileWidget PhotoSize(this IFacebookFacepileWidget widget, FacebookFacepilePhotoSize size)
        {
            Assertion.NotNull(widget);

            return(widget.PhotoSize(size.ToString().ToLowerInvariant()));
        }
        /// <summary>
        ///   <para>The width of the widget in pixels.</para>
        /// </summary>
        /// <param name="widget">Widget to call method on.</param>
        /// <param name="width">Width of widget.</param>
        /// <returns>Reference to the current widget.</returns>
        /// <exception cref="ArgumentNullException">If <paramref name="widget"/> is a <c>null</c> reference.</exception>
        /// <seealso cref="IFacebookFacepileWidget.Width(string)"/>
        public static IFacebookFacepileWidget Width(this IFacebookFacepileWidget widget, short width)
        {
            Assertion.NotNull(widget);

            return(widget.Width(width.ToString(CultureInfo.InvariantCulture)));
        }
        /// <summary>
        ///   <para>Collection of Open Graph action types.</para>
        /// </summary>
        /// <param name="widget">Widget to call method on.</param>
        /// <param name="actions">Collection of Facebook action types.</param>
        /// <returns>Reference to the current widget.</returns>
        /// <exception cref="ArgumentNullException">If <paramref name="widget"/> is a <c>null</c> reference.</exception>
        /// <seealso cref="IFacebookFacepileWidget.Actions(IEnumerable{string})"/>
        public static IFacebookFacepileWidget Actions(this IFacebookFacepileWidget widget, params string[] actions)
        {
            Assertion.NotNull(widget);

            return(widget.Actions(actions));
        }