code: public static void generate(ConfigurationImpl configuration) throws DocFileIOException {
          DocPath filename = DocPaths.MODULE_OVERVIEW_FRAME;
          ModuleIndexFrameWriter modulegen = new ModuleIndexFrameWriter(configuration, filename);
          modulegen.buildModuleIndexFile("doclet.Window_Overview", false);
      }
docs: Generate the module index file named "module-overview-frame.html".
  @throws DocFileIOException
  @param configuration the configuration object