code: protected void generateFrameFile() throws IOException {
          Content frameset = getFrameDetails();
          if (configuration.windowtitle.length() > 0) {
              printFramesetDocument(configuration.windowtitle, configuration.notimestamp,
                      frameset);
          } else {
              printFramesetDocument(configuration.getText("doclet.Generated_Docs_Untitled"),
                      configuration.notimestamp, frameset);
          }
      }
docs: Generate the constants in the "index.html" file. Print the frame details
  as well as warning if browser is not supporting the Html frames.