code: public Class[] getClasses(String superclass) {
      List<Class>	list;
  
      list = m_ListClasses.get(superclass);
      if (list == null)
        return new Class[0];
      else
        return list.toArray(new Class[list.size()]);
    }
docs: Returns all the classes that were found for this superclass.
  
  @param superclass	the superclass to return the derived classes for
  @return		the classes of the derived classes