code: public String export(boolean includeFontCss) throws Exception {
  
          StringBuffer buffer = new StringBuffer(exportCommon(getCmsObject(), getCoreData()));
          if (includeFontCss || !OpenCms.getWorkplaceAppManager().getWorkplaceCssUris().isEmpty()) {
              buffer.append("\n<style type=\"text/css\">\n");
              if (includeFontCss) {
                  buffer.append("@import url(\"").append(getFontIconCssLink()).append("\");\n");
              }
              for (String cssURI : OpenCms.getWorkplaceAppManager().getWorkplaceCssUris()) {
                  buffer.append("@import url(\"").append(CmsWorkplace.getResourceUri(cssURI)).append("\");\n");
              }
              buffer.append("</style>\n");
          }
          return buffer.toString();
      }
docs: Returns the serialized data for the core provider wrapped into a script tag.<p>
  
  @param includeFontCss <code>true</code> to include the OpenCms font CSS, not necessary in case VAADIN theme is loaded also
  
  @return the data
  
  @throws Exception if something goes wrong