code: protected List jsonList() {
          checkJsonContentType();
          try {
              return JsonHelper.toList(getRequestString());
          } catch (IOException e) {
              throw new WebException(e);
          }
      }
docs: Converts posted JSON array to a Java List. Example of a JSON array: <code>[1, 2, 3]</code>.
  
  @return Java List converted from posted JSON string.