Request example for Drag and Drop events

[MattVanZyl]

Hi guys, absolutely love the new UIElements.

I have a request for a future example:
Could you guys please create an example using the drag and drop operation events?
I know there are a few videos made by Unity that show how drag and drop functionality can be achieved using a MouseManipulator but this doesn't make use of the drag and drop operation events.
So for example how can a visual element be dragged onto another visual element, triggering the associated drag and drop events?

Thank you all for your hard work!