code: public void addSubClassInfo(Content classInfoTree) {
          if (classDoc.isClass()) {
              if (classDoc.qualifiedName().equals("java.lang.Object") ||
                      classDoc.qualifiedName().equals("org.omg.CORBA.Object")) {
                  return;    // Don't generate the list, too huge
              }
              List<ClassDoc> subclasses = classtree.subs(classDoc, false);
              if (subclasses.size() > 0) {
                  Content label = getResource(
                          "doclet.Subclasses");
                  Content dt = HtmlTree.DT(label);
                  Content dl = HtmlTree.DL(dt);
                  dl.addContent(getClassLinks(LinkInfoImpl.Kind.SUBCLASSES,
                          subclasses));
                  classInfoTree.addContent(dl);
              }
          }
      }
docs: {@inheritDoc}