anchor.diff:  
   
   call_state_function(
  -  #{callback_mode := undefined} = S,
  -  Type, Content, State, Data) ->
  +  #{callback_mode := undefined} = S, Type, Content, State, Data) ->
       case call_callback_mode(S) of
   	{ok,NewS} ->
   	    call_state_function(NewS, Type, Content, State, Data);
  
positive.code: 	     {bad_action_from_state_function,Action},
  	     ?STACKTRACE()};
  	postpone when Postpone =/= forbidden ->
  	    parse_actions(
  	      Debug, S, State, Actions,
  	      Hibernate, TimeoutsR, true, NextEventsR);
  	{next_event,Type,Content} ->
  	    case event_type(Type) of
  		true when NextEventsR =/= forbidden ->
  
negative.code:       postponed => P,
        %%
        %% The following fields are finally set from to the arguments to
        %% loop_event_actions/9 when it finally loops back to loop/3
        %% in loop_event_result/11
        timer_refs => TimerRefs,
        timer_types => TimerTypes,
        hibernate => Hibernate,
  