public function _deleteByLike( $like, $fname = false )
    {
        if ( $fname )
            $fname .= "::_deleteByLike($like)";
        else
            $fname = "_deleteByLike($like)";
        return $this->_protect( array( $this, '_deleteByLikeInner' ), $fname,
                                $like, $fname );
    }