anchor.diff:  -behavior(gen_mod).
   
   -export([start/2, stop/1]).
  --export([send_like/6, send_flag/5]).
  +-export([send_like/6, send_flag/5, send_expire/5]).
   
   -include("ejabberd.hrl").
   -include("jlib.hrl").
  
positive.code: 	Packet = build_packet(message_flag, [MsgId, Status, Username, Timestamp]),
  	send_packet_all_resources(?SendFrom, To, Packet).
  
  build_packet(message_like, [MsgId, Status, Username, Timestamp, Jid]) ->
  	{xmlelement, "presence",
  		[{"type", "msg_like"}],
  
negative.code: 	{xmlelement, "presence",
  		[{"type", "msg_flag"}],
  		[{xmlelement, "item", [{"msg_id", MsgId}, {"status", Status}, {"username", Username}, {"timestamp", Timestamp}], []}]
  	};
  build_packet(message_expire, [Name, Jid, Status, Timestamp]) ->
  	{xmlelement, "presence",
  		[{"type", "msg_expire"}],
  		[{xmlelement, "item", [{"name", Name}, {"jid", Jid}, {"status", Status}, {"timestamp", Timestamp}], []}]
  	}.
  
  send_packet_all_resources(FromJIDString, ToJIDString, Packet) ->
  