template<typename... TDone>
class ParamUnpacker
{
public:
    template<typename RetType, typename TNext, typename... TRest>
    static RetType ExecuteFunction(TDone... done, std::list<Object::Ref> &rest, boost::function<RetType (TDone..., TNext, TRest...)> func)
    {
        TNext next = boost::dynamic_pointer_cast<TNext::value_type>(rest.pop_front());
        return ParamUnpacker<TDone..., TNext>::template ExecuteFunction<RetType, TRest...>(done..., next, rest, func);
    }

    template<typename RetType, typename TNext>
    static RetType ExecuteFunction(TDone... done, std::list<Object::Ref> &rest, boost::function<RetType (TDone..., TNext)> func)
    {
        TNext next = boost::dynamic_pointer_cast<TNext::value_type>(rest.pop_front());
        return func(done..., next);
    }
};