Interaction with dragged object

[BctfN0HUK7Yg]

I want to make my widget react to an object being dragged over it. To do this, I need to get not only the fact of dragging, but also the ID of the object. There's memory().interaction, but it's private, and it doesn't really have the Id I need. Where can the custom ID of the dragged object be stored in memory?

And why click_id and drag_id appear in memory().interaction simultaneously and with the same values?

[BctfN0HUK7Yg]

I found solution.
In my source widget:

if ui.memory().is_being_dragged(widget_id){
        let dragged_id=Id::new("dragged_id");
        ui.memory().data.insert_temp(draged_id, MY_ID);
...
}

In my target widget:

if is_anything_being_dragged {
 let dragged_id=Id::new("dragged_id");
 let MYID=ui.memory().data.get_temp::<MYIDTYPE>(dragged_id).unwrap();
...
}