anchor.diff:  -include("dbus.hrl").
   
   -export([
  +	 to_xml/1,
   	 build_introspect/2,
   	 from_xml/1,
   	 from_xml_string/1,
  
positive.code: 
  %% api
  
  to_xmerl(List) when is_list(List) ->
      lists:map(fun(Elem) -> to_xmerl(Elem) end, List);
  
  
negative.code:      [{direction, Elem#arg.direction},
        {type, Elem#arg.type}], []}.
  
  build_introspect(Service, Path) when is_list(Service), is_list(Path) ->
      Headers = [
  	       {?HEADER_PATH, #variant{type=object_path, value=Path}},
  	       {?HEADER_DESTINATION, #variant{type=string, value=Service}},
  