code: protected void buildAllClassesFile(boolean wantFrames) throws IOException {
          String label = configuration.getText("doclet.All_Classes");
          Content body = getBody(false, getWindowTitle(label));
          Content heading = HtmlTree.HEADING(HtmlConstants.TITLE_HEADING,
                  HtmlStyle.bar, allclassesLabel);
          body.addContent(heading);
          Content ul = new HtmlTree(HtmlTag.UL);
          // Generate the class links and add it to the tdFont tree.
          addAllClasses(ul, wantFrames);
          HtmlTree htmlTree = (configuration.allowTag(HtmlTag.MAIN))
                  ? HtmlTree.MAIN(HtmlStyle.indexContainer, ul)
                  : HtmlTree.DIV(HtmlStyle.indexContainer, ul);
          body.addContent(htmlTree);
          printHtmlDocument(null, false, body);
      }
docs: Print all the classes in the file.
  @param wantFrames True if we want frames.