eventHandler.onWindowClosed(closedWindowID);
break;
case WINDOW_UPDATED:
WindowInfo.Builder windowInfoBuilder = WindowInfo.newBuilder();
buildPayload(event, windowInfoBuilder);
WindowInfo info = windowInfoBuilder.build();
eventHandler.onWindowUpdated(info);
break;
case WINDOW_LOADED:
WindowID.Builder loadedWindowBuilder = WindowID.newBuilder();
buildPayload(event, loadedWindowBuilder);