public function deletegroupAction()
 {
     SxCms_Acl::requireAcl('securedocs', 'securedocs.delete');
     $id = $this->_getParam('id');
     $proxy = new SxModule_Securedocs_Group_Proxy();
     $item = $proxy->getById($id);
     $item->delete();
     $flashMessenger = $this->_helper->getHelper('FlashMessenger');
     $flashMessenger->addMessage($this->admin_tmx->_('groupdeleted'));
     $this->_helper->redirector->gotoSimple('groupoverview', 'securedocs');
 }