anchor.diff:  -spec get_param(atom()) -> term().
   
   get_param(Param) ->
  -    {ok, Value} = application:get_env(?APPLICATION, Param),
  +    {ok, Value} = application:get_env(yamerl, Param),
       Value.
   
   -spec is_param_valid(atom(), term()) -> boolean().
  
positive.code:             do_start(Rest);
          false ->
              Message = io_lib:format(
                "~s: invalid application configuration~n", [?APPLICATION]),
              {error, invalid_configuration, Message}
      end;
  do_start([preload_core_schema_mods | Rest]) ->
  
negative.code: -spec set_param(atom(), term()) -> ok.
  
  set_param(Param, Value) ->
      application:set_env(yamerl, Param, Value).
  
  -spec check_and_set_param(atom(), term()) -> ok.
  
  