docs: void submit() {
  
          try {
              OpenCms.getSiteManager().updateGeneralSettings(
                  m_cms,
                  ((CmsSite)m_fieldDefaultURI.getValue()).getSiteRoot(),
                  getWebserverList(),
                  "/" + (String)m_fieldSharedFolder.getValue() + "/");
              if (!CmsEditSiteForm.FORBIDDEN_FOLDER_NAMES.isEmpty()) {
                  CmsEditSiteForm.FORBIDDEN_FOLDER_NAMES.set(1, (String)m_fieldSharedFolder.getValue());
              }
              // write the system configuration
              OpenCms.writeConfiguration(CmsSitesConfiguration.class);
          } catch (CmsException e) {
              //
          }
  
      }