anchor.diff:  %%                                       {stop, Reason, State}
   %% Description: Handling all non call/cast messages
   %%--------------------------------------------------------------------
  +-spec handle_info(any(), #state{}) -> {noreply, #state{}}.
   handle_info(_Info, State) ->
       {noreply, State}.
   
  
positive.code: -export([init/1, handle_call/3, handle_cast/2, handle_info/2,
           terminate/2, code_change/3]).
  
  -record(state, {start, map}).
  
  %%====================================================================
  %% API
  
negative.code: %% Func: code_change(OldVsn, State, Extra) -> {ok, NewState}
  %% Description: Convert process state when code is changed
  %%--------------------------------------------------------------------
  -spec code_change(any(), #state{}, any()) -> {ok, #state{}}.
  code_change(_OldVsn, State, _Extra) ->
      {ok, State}.
  
  