Is there an example of either a webthing or an add-on subscribing to changes of a property in another thing?
I’m interested in having a watcher that subscribes to property status changes in a thing and reacts (possibly by propagating that change to other things).
I see the websocket API defines this, but I’m wondering if there’s something in
gateway_addon or similar that helps with doing so. If not, it’d be helpful to see an example that actually makes this request.