/**
* This method cleanups resources from previous app instance. When Vaadin app is created using CDI
* injection, http session does not die after app.close() which results the same application
* instance to be used for the next application.
*/
private void cleanupPreviousResources() {
// Remove all old windows, if any
Collection<Window> oldWindows = getWindows();
for (Window w : oldWindows) {
removeWindow(w);
}
// Remove all i18n data
if (internationalizationDictionary != null) {
internationalizationDictionary.clear();
}
}