code: function(namespace, ressource, args, options) {
              var d = Q.defer();
              var namespace_configs = _.extend({}, Resources.namespaces[namespace] || {}, options || {});
              var loader = namespace_configs.loader || namespace;
              
              if (Resources.loaders[loader] == null) {
                  logging.error("Loader doesn't exists ", loader, "namespace=",namespace);
                  d.reject();
                  return d.promise;
              }
              Resources.loaders[loader](ressource, d, args, namespace_configs);
              return d.promise;
          }
docs: /*
  Load a ressource