create_drag_icon
Description:
Creates a `GdkPaintable` representation of the item at path.
Note: 
      
        
    
    Use [class@Gtk.GridView] instead
This image is used for a drag icon.
Parameters:
| this | 
           a `GtkIconView`  | 
      
| path | 
           a `GtkTreePath` in this  | 
      
Returns:
| 
           a newly-allocated `GdkPaintable` of the drag icon.  |