code: function(callback) {
              if (resumeEnabled) {
                  qq.each(localStorage, function(key, item) {
                      if (key.indexOf(qq.format("qq{}resume", namespace)) === 0) {
                          var uploadData = JSON.parse(item);
                          callback(key, uploadData);
                      }
                  });
              }
          }
docs: Iterates through all XHR handler-created resume records (in local storage), invoking the passed callback and passing in the key and value of each local storage record.