private final Map<Integer, ExternalizerAdapter> readers = new HashMap<Integer, ExternalizerAdapter>();
private volatile boolean started;
private void initInternalExternalizers() {
internalExternalizers.add(new ArrayListExternalizer());
internalExternalizers.add(new LinkedListExternalizer());
internalExternalizers.add(new MapExternalizer());
internalExternalizers.add(new SetExternalizer());
internalExternalizers.add(new SingletonListExternalizer());