How to show a selection adornment only on a icon, not whole panel

GoJS
1

I have a Node which has a icon and a text block like this picture

I want a selection adornment show on the icon only, not whole node, like this picture

Can I do this?

2

Yes, that is what Part.selectionObjectName and Part.selectionAdornmentTemplate are for.
http://gojs.net/latest/intro/selection.html