private void GetType(object sender, EventArgs e)
 {
     if (sender is ToolStripMenuItem item && item.Tag is TransSurface)
     {
         this.type = (TransSurface)item.Tag;
         ExpireSolution(true);
     }
 }
        public override bool Read(GH_IReader reader)
        {
            int aIndex = -1;

            if (reader.TryGetInt32("TransSurface", ref aIndex))
            {
                type = (TransSurface)aIndex;
            }

            return(base.Read(reader));
        }