anchor.diff:  set_attr(Attr, Value) when is_list(Attr) ->
       set_attr(binary:list_to_bin(Attr), Value);
   set_attr(Attr, Value) when is_binary(Attr) ->
  -    {struct, [{Attr, Value}]}.
  +    to_string({struct, [{Attr, Value}]}).
   
   
   
  
positive.code: %%          value is a struct then no adaptation is performed.
  %% @end
  -spec get_field_internal(Json::string() | tuple(), Query::string()) -> string() | atom().
  get_field_internal(Json, Query)->
      JsonParser = destructure_json:parse("Obj."++Query),
      try JsonParser(Json) of
  	Result when is_binary(Result) ->
  
negative.code: %% '''
  %% @end
  -spec rm_field(Json::json(), Query::field()) -> json_string().
  rm_field(Json, Query)  ->
      rm_field_internal(prepare_json(Json), Query).
  
  %% @doc
  %% Sets a json attribute 'Attr' to 'Value'
  