public _AttachedStateWrapper(Class clazz,
    Object wrappedStateObject) 
{
                      
        if (wrappedStateObject != null && !(wrappedStateObject instanceof Serializable))
        {
            throw new IllegalArgumentException("Attached state for Object of type " + clazz + " (Class " + wrappedStateObject.getClass().getName() + ") is not serializable");
        }
        _class = clazz;
        _wrappedStateObject = wrappedStateObject;
}

Parameters:

clazz - null means wrappedStateObject is a List of state objects

wrappedStateObject -

 public Class getClazz() 
{
        return _class;
}

 public Object getWrappedStateObject() 
{
        return _wrappedStateObject;
}