@Tag("my-element") @NpmPackage(value = "@polymer/iron-a11y-keys-behavior", version = "3.0.1") public class MyElement extends PolymerTemplate<TemplateModel> { public MyElement() { addPropertyChangeListener(e -> handleKeydown(e)); } private void handleKeydown(PropertyChangeEvent event) { KeyEvent keyEvent = (KeyEvent) event.getEventData().getOrDefault("event", null); if (keyEvent != null && keyEvent.getKeyCode() == KeyCode.ENTER) { } } }


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