anchor.diff:              build_rand_ts_measurement(),
   
               % Excess fields should be removed when compressing
  -            {RandMeasurement#{<<"key">> => <<"value">>}, RandMeasurement}
  +            {different, RandMeasurement#{<<"key">> => <<"value">>}, RandMeasurement}
           ]
       }).
   
  
positive.code: 
      lists:foreach(fun(Value) ->
          {InitialItem, ExpectedExpandResult} = case Value of
              {_, {error, _}} -> Value;
              {Item, ExpandedItem} -> {Item, {ok, ExpandedItem}};
              Item -> {Item, {ok, Item}}
          end,
  
          ?assertEqual(ExpectedExpandResult, ?rpc(atm_value:expand(
  
negative.code: 
              % Array items should be compressed and expanded according to their type rules
              {
                  different,
                  [
                      [],
                      [
  