/// <summary>
        /// Sets the notification message background.
        /// </summary>
        /// <param name="builder">The builder.</param>
        /// <param name="backgroundBrush">The background brush.</param>
        /// <returns>Returns the notification message builder.</returns>
        public static NotificationMessageBuilder Background(
            this NotificationMessageBuilder builder,
            Brush backgroundBrush)
        {
            builder.SetBackground(backgroundBrush);

            return(builder);
        }
        /// <summary>
        /// Sets the notification message background.
        /// </summary>
        /// <param name="builder">The builder.</param>
        /// <param name="backgroundBrush">The background brush.</param>
        /// <returns>Returns the notification message builder.</returns>
        public static NotificationMessageBuilder Background(
            this NotificationMessageBuilder builder,
            string backgroundBrush)
        {
            var brush = new BrushConverter().ConvertFrom(backgroundBrush) as Brush;

            builder.SetBackground(brush);

            return(builder);
        }