protected void printNavSummaryLink(ClassDoc cd, boolean link) {
        if (link) {
            writer.printHyperLink("", (cd == null) ? "nested_class_summary":
                    "nested_classes_inherited_from_class_" +
                cd.qualifiedName(),
                ConfigurationImpl.getInstance().getText("doclet.navNested"));
        } else {
            writer.printText("doclet.navNested");
        }
    }