code: public void onClick(MenuItemClickEvent event) {
  		FeatureTransaction ft = mapWidget.getMapModel().getFeatureEditor().getFeatureTransaction();
  		if (ft != null && index != null) {
  			mapWidget.render(ft, RenderGroup.VECTOR, RenderStatus.DELETE);
  			RemoveCoordinateOp op = new RemoveCoordinateOp(index);
  			ft.execute(op);
  			mapWidget.render(ft, RenderGroup.VECTOR, RenderStatus.ALL);
  		}
  	}
docs: Remove an existing point from the geometry at a given index.
  
  @param event
  The {@link MenuItemClickEvent} from clicking the action.