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

        if ( $return )
            $this->eventHandler->notify( 'cluster/deleteByLike', array( $like ) );

        return $return;
    }