public void buildClassSummary() {
                ClassDoc[] classes =
                        packageDoc.isIncluded()
                                ? packageDoc.ordinaryClasses()
                                : configuration.classDocCatalog.ordinaryClasses(
                                        Util.getPackageName(packageDoc));
                if (classes.length > 0) {
                        packageWriter.writeClassesSummary(
                                classes,
                                configuration.getText("doclet.Class_Summary"));
                }
        }