anchor.diff:  %% =======================================================
   
   next_state(State, {ok, _Status, _Heads, Body}, {call, _, create_map, _}) ->
  -	Props = jsx:to_term(Body),
  +	Props = case jsx:to_term(list_to_binary(Body)) of
  +		{incomplete, _} -> [];
  +		Else -> Else
  +	end,
   	Id = proplists:get_value(<<"url">>, Props),
   	State#state{map_id = Id};
   
  
positive.code: %% =======================================================
  
  g_mapjson() ->
  	?TRIQLET(X, list(oneof([
  		{name, g_name()},
  		{background_color,  g_color()},
  		{gridline_color,  g_color()},
  
negative.code: 	true;
  
  postcondition(State, Call, Res) ->
  	%?debugFmt("State:  ~p\nCall:  ~p\nRes:  ~p", [State, Call, Res]),
  	false.
  
  assert_body(Json, Body) ->
  