docs: protected void initNestedFormatters(Element element, CmsXmlContentDefinition contentDefinition)
      throws CmsXmlException {
  
          Iterator<Element> i = CmsXmlGenericWrapper.elementIterator(element, APPINFO_NESTED_FORMATTER);
          while (i.hasNext()) {
              // iterate all "default" elements in the "defaults" node
              Element handlerElement = i.next();
              String formatterElement = handlerElement.attributeValue(APPINFO_ATTR_ELEMENT);
              addNestedFormatter(formatterElement, contentDefinition);
          }
      }