code: private Content getTreeForClassHelper(TypeMirror type) {
          Content li = new HtmlTree(HtmlTag.LI);
          if (type.equals(typeElement.asType())) {
              Content typeParameters = getTypeParameterLinks(
                      new LinkInfoImpl(configuration, LinkInfoImpl.Kind.TREE,
                      typeElement));
              if (configuration.shouldExcludeQualifier(utils.containingPackage(typeElement).toString())) {
                  li.addContent(utils.asTypeElement(type).getSimpleName());
                  li.addContent(typeParameters);
              } else {
                  li.addContent(utils.asTypeElement(type).getQualifiedName());
                  li.addContent(typeParameters);
              }
          } else {
              Content link = getLink(new LinkInfoImpl(configuration,
                      LinkInfoImpl.Kind.CLASS_TREE_PARENT, type)
                      .label(configuration.getClassName(utils.asTypeElement(type))));
              li.addContent(link);
          }
          return li;
      }
docs: Get the class helper tree for the given class.
  
  @param type the class to print the helper for
  @return a content tree for class helper