/**
  * Parent before delete callback
  * 
  * De-coupled for easier unit testing
  * 
  * @author  Everton Yoshitani <*****@*****.**>
  * @since   0.1
  * @param   boolean $cascade
  * @return  boolean
  */
 public function __parentBeforeDelete($cascade)
 {
     return parent::beforeDelete($cascade);
 }