anchor.diff:          end).
   
   prop_parallel() ->
  -    start_tracing(),
  +    ensure_tracing_started(),
   
       ?FORALL(Cmds, more_commands(?COMMAND_MULTIPLE, parallel_commands(?MODULE)), 
           begin
  
positive.code: %%%===================================================================
  
  prop_sequential() ->
      start_tracing(),
  
      ?FORALL(Cmds, more_commands(?COMMAND_MULTIPLE, commands(?MODULE)), 
          begin
  
negative.code:     [{_, NodeName}] = ets:lookup(?MODULE, Name),
      NodeName.
  
  ensure_tracing_started() ->
      partisan_trace_orchestrator:start_link().