click event double triggered

Flow
1

hi,
I try a click event in vaadin 14 . when I click the button.
it will also trigger the layout click.
Can I make it only trigger the button click ?
thanks

@Route(value = “test” , layout = MainView.class )
public class testView extends VerticalLayout {

public testView() {
	
	Button btn = new Button();
	btn.getElement().addEventListener("click",e->{
		System.out.println("button Click");
	});
	
	
	
	this.getElement().addEventListener("click",e->{
		System.out.println("layout Click");
	});
	
	this.add(btn);
	
}

}

2

Like this:

        btn.getElement().addEventListener("click",e->{
            System.out.println("button Click");
        }).addEventData("event.stopPropagation()");