Custom widget - Item Label

Quick question. I cant find how to use in widget code Item Label created in configuration settings?

The label widget is what it is as label. that’s it. It doesn’t link with OH items
Use the dummy item for that

We did not understand each other.
When we create settings in custom widget for Type Item, there is Id, Label, Default Value and Description.
Question was how to use this Label.

That, I don’t know

I’ve tried {{getItem(config.online).label}} and it gives label but from Item not Label from configuration settings.
Its useful but I would prefer using Label from Conifiguration Settings to create more reusable widgets.

Can the label from settings be used in some way? What is the purpose of this label?