anchor.diff:      Papa = self(),
       spawn_link(fun() ->
                          0 = select_nif(R,?ERL_NIF_SELECT_READ,R,null,Ref1),
  -                       [] = flush(),
  +                       [] = flush(0),
                          Papa ! sync,
                          [{select, R, Ref1, ready_input}] = flush(),
                          <<"hej">> = read_nif(R, 3),
  
positive.code:         false -> ok = release_resource(R_ptr);
          true -> ok = release_resource_from_thread(R_ptr)
      end,
      [] = flush(),
      {R_ptr, _, 1} = last_resource_dtor_call(),
      [] = monitored_by(Pid),
      Pid ! return,
  
negative.code:     1 = demonitor_process_nif(R_ptr, MonBin2),
  
      ok = release_resource(R_ptr),
      [] = flush(0),
      {R_ptr, _, 1} = last_resource_dtor_call(),
      [] = monitored_by(Pid),
      Pid ! return,
  