Create an executor_work_guard object.

template<
    typename T>
executor_work_guard< typename associated_executor< T >::type > make_work_guard(
    const T & t,
    typename constraint< !is_executor< T >::value >::type  = 0,
    typename constraint< !execution::is_executor< T >::value >::type  = 0,
    typename constraint< !is_convertible< T &, execution_context & >::value >::type  = 0);