this.script = newInitializerScript();
add(baseButton = newButton("btn", model, iconTypeModel));
WebMarkupContainer dropdownMenu = new WebMarkupContainer("dropdown-menu");
dropdownMenu.add(new AlignmentBehavior(alignment));
add(dropdownMenu);
dropdownMenu.add(buttonListView = newButtonList("buttons"));
this.icon = newButtonIcon("icon", iconTypeModel);