code: public Set<String> parseAddFormatters(I_CmsXmlContentLocation node) {
  
          Set<String> addFormatters = new HashSet<String>();
          for (I_CmsXmlContentValueLocation addLoc : node.getSubValues(N_ADD_FORMATTERS + "/" + N_ADD_FORMATTER)) {
              CmsXmlVfsFileValue value = (CmsXmlVfsFileValue)addLoc.getValue();
              CmsLink link = value.getLink(m_cms);
              if (link != null) {
                  addFormatters.add(link.getStructureId().toString());
              }
          }
          return addFormatters;
      }
docs: Parses the formatters to add.<p>
  
  @param node the parent node
  @return the set of keys of the formatters to add