code: public String findEntryPoint(CmsObject cms, String openPath) {
  
          CmsADEConfigData configData = lookupConfiguration(cms, openPath);
          String result = configData.getBasePath();
          if (result == null) {
              return cms.getRequestContext().addSiteRoot("/");
          }
          return result;
      }
docs: Finds the entry point to a sitemap.<p>
  
  @param cms the CMS context
  @param openPath the resource path to find the sitemap to
  
  @return the sitemap entry point