code: protected void buildModulePackagesIndexFile(String title,
              boolean includeScript, ModuleElement mdle) throws DocFileIOException {
          String windowOverview = configuration.getText(title);
          Content body = getBody(includeScript, getWindowTitle(windowOverview));
          addNavigationBarHeader(body);
          addOverviewHeader(body);
          addModulePackagesIndex(body, mdle);
          addOverview(body);
          addNavigationBarFooter(body);
          printHtmlDocument(configuration.metakeywords.getOverviewMetaKeywords(title,
                  configuration.doctitle), includeScript, body);
      }
docs: Generate and prints the contents in the module packages index file. Call appropriate
  methods from the sub-class in order to generate Frame or Non
  Frame format.
  
  @param title the title of the window.
  @param includeScript boolean set true if windowtitle script is to be included
  @param mdle the name of the module being documented
  @throws DocFileIOException if there is an exception building the module packages index file