public static int countProjectsWithoutUser() throws Exception {
   ResponseProjectsLst rpl =
       (ResponseProjectsLst)
           XmlHelpers.deserializeFromXml(
               ResponseProjectsLst.class, new File("data/responseswithuser500.xml"));
   IPredicate<ResponseProjects> isWithoutUser =
       new IPredicate<ResponseProjects>() {
         @Override
         public boolean invoke(ResponseProjects rp) {
           return rp.user == null;
         }
       };
   return Func.count(isWithoutUser, rpl.responseProjs);
 }