public void removeShutdownObject(RequiresShutdown obj) {
if (shutdownObjects.contains(obj)) {
System.out.println("Removing shutdown " + obj.toString());
}
shutdownObjects.remove(obj);
}
public void addShutdownObject(RequiresShutdown obj) {
System.out.println("Adding shutdown " + obj.toString());
shutdownObjects.put(obj, true);
}
