public void select(final Object state) {
if (!isShowing()) {
ComboBoxWrap.this.as(Parent.class, Node.class).lookup(new ByStyleClass<Node>("arrow-button")).wrap().mouse().click();
}
Parent<Node> popupContainer =
Root.ROOT.lookup(new ByWindowType(PopupWindow.class)).
as(Parent.class, Node.class);
Wrap<? extends ListView> list = popupContainer.lookup(ListView.class).wrap();
list.as(Selectable.class).selector().select(state);
}