code: private void initOldAdditionalResources() {
  
          SortedMap<String, String> parameters = new TreeMap<String, String>(m_parameters);
          List<String> resources = new ArrayList<String>(m_resources);
  
          String additionalResources;
          additionalResources = parameters.get(MODULE_PROPERTY_ADDITIONAL_RESOURCES);
          if (additionalResources != null) {
              StringTokenizer tok = new StringTokenizer(
                  additionalResources,
                  MODULE_PROPERTY_ADDITIONAL_RESOURCES_SEPARATOR);
              while (tok.hasMoreTokens()) {
                  String resource = tok.nextToken().trim();
                  if ((!"-".equals(resource)) && (!resources.contains(resource))) {
                      resources.add(resource);
                  }
              }
          }
  
          m_resources = resources;
      }
docs: Resolves the module property "additionalresources" to the resource list and
  vice versa.<p>
  
  This "special" module property is required as long as we do not have a new
  GUI for editing of module resource entries. Once we have the new GUI, the
  handling of "additionalresources" will be moved to the import of the module
  and done only if the imported module is a 5.0 module.<p>