// TODO: Generalize the class, it currently isn't so general.
public class Coachmark extends UiComponent<View> {
public static Coachmark create(
Tooltip.Resources res, Renderer renderer, PositionController.Positioner positioner) {
View view = new View(res.coachmarkCss());
return new Coachmark(view, renderer, new PositionController(positioner, view.getElement()));
}