anchor.diff:  code_change(_OldVsn, State, _Extra) ->
   	{ok, State}.
   
  +%%----------------------------------------------------------------------
  +%%  The ocs_event_log private API
  +%%----------------------------------------------------------------------
  +
   -spec pending_result(ReplyInfo, EventManager, Handler) -> ok
   	when
   		ReplyInfo :: tuple(),
  
positive.code: 
  -behaviour(gen_event).
  
  %% export the private API
  -export([pending_result/3, established_result/1]).
  %% export the ocs_event_log API
  -export([notify/2]).
  
  %% export the callbacks needed for gen_event behaviour
  -export([init/1, handle_call/2, handle_event/2, handle_info/2,
  
negative.code: -type state() :: #state{}.
  
  %%----------------------------------------------------------------------
  %%  The ocs_event_log public API
  %%----------------------------------------------------------------------
  
  -spec notify(EventType, EventPayLoad) -> ok
  