/**
  * Checks whether the given blog is valid
  *
  * @param Tx_BlogExample_Domain_Model_Blog $blog The blog
  * @return boolean TRUE if blog could be validated, otherwise FALSE
  */
 public function isValid($blog)
 {
     if (strtolower($blog->getTitle()) === 'extbase') {
         $this->addError(Tx_Extbase_Utility_Localization::translate('error.Blog.invalidTitle', 'BlogExample'), 1297418974);
         return FALSE;
     }
     return TRUE;
 }