Servicestack.net custom XML DateTime serialization -

is there way override xml datetime serialization in servicestack.net can json:

jsconfig<datetime>.serializefn = date => new datetime(date.ticks, datetimekind.local).tostring("dd.mm.yyyy hh:mm:ss"); 

i want same thing xml datetimes.

edit:

i found out can hook xml serialization this:

this.contenttypefilters.register("application/xml", serializexmltostream, deserializexmlfromstream);   public static void serializexmltostream(irequestcontext requestcontext, object response, stream stream) {     using (var sw = new streamwriter(stream))     {          sw.write(response.toxml());     } } 

this returns same xml without hook. if has idea how can change serialiazation of datetime custom format or other global way please let me know.