/**
  * invalidate cache for this account
  *
  * @param Expressomail_Model_Account $_account
  * @return void
  */
 protected function _invalidateAccountCache(Expressomail_Model_Account $_account)
 {
     Tinebase_Core::setupCache();
     $cache = Tinebase_Core::getCache();
     $cacheId = Tinebase_Core::createCacheId(array(Tinebase_Core::getUser()->accountId, $_account->getId()));
     $_filter = new Expressomail_Model_AccountFilter(array());
     //Cleans cache generate in user login, when the method seach is called with a empty filter.
     $cacheSearch = Tinebase_Core::createCacheId(array('Expressomail_Controller_Account_search', Tinebase_Core::getUser()->accountId, $_filter->toArray()));
     $cache->remove($cacheId);
     $cache->remove($cacheSearch);
 }