anchor.diff:  
   content_types_accepted(Req, State) ->
       {[
  -     {<<"application/protobuf">>, multirequest_parser}
  +     {<<"application/protobuf+vnd.simplox.multirequest">>, multirequest_parser}
       ], Req, State}.
   
   
  
positive.code: 					     Socket, Transport, State);
  		 {http, Pid, {error, Reason}} ->
  		     send_multipart_error(Pid, Reason, Socket, Transport, State);
  		 {'DOWN', _Ref, process, Pid, normal} ->
  		     % process normal exit, just continue
  		     {continue, State};
  		 {'DOWN', _Ref, process, Pid, Reason} ->
  
negative.code: 	     <<"multipart/mixed; boundary=", Boundary/binary>>,
  	     cowboy_req:set_resp_body_fun(StreamFun, Req3)),
      {true, Req4, State3}.
  
  spawn_request_procs(MultiRequest, State) ->
      State#state{
  