public function getRev($relation = null)
        {
            if (null !== $relation) {
                return isset($this->_rev[$relation]) ?
                       $this->_rev[$relation] :
                       null;
            }

            return $this->_rev;
        }
public function getRev($relation = null)
        {
            if (null !== $relation) {
                return isset($this->_rev[$relation]) ?
                       $this->_rev[$relation] :
                       null;
            }

            return $this->_rev;
        }
public function getRev ( $ relation = null ) { if ( null !== $ relation ) { return isset ( $ this -> _rev [ $ relation ] ) ? $ this -> _rev [ $ relation ] : null ; } return $ this -> _rev ; }
Returns the page's reverse links to other pages

This method returns an associative array of forward links to other pages,
where each element's key is the name of the relation (e.g. alternate,
prev, next, help, etc), and the value is a mixed value that could somehow
be considered a page.

@param  string $relation  [optional] name of relation to return. If not
given, all relations will be returned.
@return array             an array of relations. If $relation is not
specified, all relations will be returned in
an associative array.
Returns the page s reverse links to other pages