get_item_at_pos
Description:
Gets the path and cell for the icon at the given position.
Note: 
      
        
    
    Use [class@Gtk.GridView] instead
Parameters:
| this | A `GtkIconView`. | 
| x | The x position to be identified | 
| y | The y position to be identified | 
| path | Return location for the path | 
| cell | Return location for the renderer  responsible for the cell at ( | 
Returns:
| true if an item exists at the specified position |