code: @Override
  	public void dragDone(final DragEvent dragEvent) {
  
  		System.out.println("drag DONE => " + controller().model().key());
  		// System.out.println("drag DONE");
  
  		/* the drag and drop gesture ended */
  		/* if the data was successfully moved, clear it */
  		// if (dragEvent.getTransferMode() == TransferMode.MOVE) {
  		// Button b = ((Button) dragEvent.getGestureSource());
  		// ((Pane) b.getParent()).getChildren().remove(b);
  		// }
  		dragEvent.consume();
  	}
docs: {@inheritDoc}