internal override Hashtable ToHashtable()
        {
            Hashtable hashtables = new Hashtable();

            if (Hover.IsDirty())
            {
                hashtables.Add("hover", Hover.ToHashtable());
            }
            if (Select.IsDirty())
            {
                hashtables.Add("select", Select.ToHashtable());
            }
            return(hashtables);
        }