/// <summary>
        /// Determines if the given value represents a valid state of this property.
        /// </summary>
        /// <param name="value">The state that should be used.</param>
        /// <returns>True if the state is valid, otherwise false.</returns>
        protected override Boolean IsValid(CSSValue value)
        {
            var variant = value.ToFontVariant();

            if (variant.HasValue)
            {
                _variant = variant.Value;
                return(true);
            }

            return(false);
        }