code: public String[] getAvailableDictionaryClasses() {
          List<String> classList = new ArrayList<String>();
          for (IImplementationSpecification spec : speclist) {
              String[] tmp = getDictionaryClass(spec);
              if (tmp != null) classList.addAll(Arrays.asList(tmp));
          }
          Set<String> uniqueClasses = new HashSet<String>(classList);
          return (String[]) uniqueClasses.toArray(new String[]{});
      }
docs: Get the all the unique dictionary classes that the descriptors belong to.
  
  @return An array containing the unique dictionary classes.