public override void Do()
{
SelectionModel sm = (Designer.CurrentSheet as Sheet <Gdk.Event, Cairo.Context, SolidV.MVC.Model>).Model.GetSubModel <SelectionModel>();
for (int i = 0; i < sm.Selected.Count - 1; i++)
{
BinaryRelationShape binaryRelation = (BinaryRelationShape)NewShape.DeepCopy();
binaryRelation.From = sm.Selected[i];
binaryRelation.To = sm.Selected[i + 1];
Designer.AddShapes(binaryRelation);
}
}