/**
  * get saved folder record by backend and globalname
  *
  * @param  mixed   $_accountId
  * @param  string  $_globalName
  * @return Expressomail_Model_Folder
  */
 public function getByBackendAndGlobalName($_accountId, $_globalName, $_useCache = TRUE)
 {
     $accountId = $_accountId instanceof Expressomail_Model_Account ? $_accountId->getId() : $_accountId;
     $result = $this->_backend->get($this->_backend->encodeFolderUid(Expressomail_Model_Folder::encodeFolderName($_globalName), $accountId), $_useCache);
     return $result;
 }