docs: public CmsFlexRequestDispatcher getRequestDispatcherToExternal(String vfs_target, String ext_target) {
  
          return new CmsFlexRequestDispatcher(
              m_controller.getTopRequest().getRequestDispatcher(ext_target),
              CmsLinkManager.getAbsoluteUri(vfs_target, m_controller.getCmsObject().getRequestContext().getUri()),
              ext_target);
      }