anchor.diff:      JE#job_ent{job_results = Results}.
   
   -spec job_status(job_ent()) -> job_status().
  -job_status(#job_ent{job_coord = Pid, job_results = []}) ->
  +job_status(#job_ent{job_coord = Pid, job_results = none}) ->
       case is_process_alive(Pid) of
           true -> active;
           false -> dead
  
positive.code:             invalid_job;
          {ok, #job_ent{start = Start, job_data = JobNfo, job_results = Results,
                        task_ready = Ready, task_failed = Failed} = JE} ->
              {ok, {Start, job_status(JE), JobNfo, Results, Ready, Failed}}
      end.
  
  -spec do_add_job_event(host(), jobname(), binary(), event(), state()) -> state().
  
negative.code:     case dict:find(JobName, Events) of
          error ->
              invalid_job;
          {ok, #job_ent{job_coord = Pid, job_results = Res}} when Res =/= none ->
              {ready, Pid, Res};
          {ok, #job_ent{job_coord = Pid} = JE} ->
              {job_status(JE), Pid}
  