public function getId($offset = null)
    {
        if (null !== ($token = $this->getToken($offset))) {
            return $token[0];
        }

        return null;
    }
public function getId($offset = null)
    {
        if (null !== ($token = $this->getToken($offset))) {
            return $token[0];
        }

        return null;
    }
public function getId ( $ offset = null ) { if ( null !== ( $ token = $ this -> getToken ( $ offset ) ) ) { return $ token [ 0 ] ; } return null ; }
Returns the token identifier at the offset.

@param integer $offset The offset to retrieve.

@return integer The token identifier.
Returns the token identifier at the offset .