Realurl Condig userFunc

// realurl_conf.php
// .. snip begin
'postVarSets' => array(
    '_DEFAULT' => array(
        'ean' =>
            array(
                'GETvar' => 'tx_niblucherproductimport_pi1[product]',
                'userFunc' => 'EXT:ni_blucher_productimport/class.user_blucher_realurl.php:&user_blucher_realurl->eanMain'
            ),
        ),
    ),

// ... snip end


// declared in file, class.user_blucher_realurl.php

class user_blucher_realurl {

    function eanMain($params, $pObj) {

        die('Start eanMain()');

        return ($params['decodeAlias'] ? $this->ean2productId($params['value']) : $this->productId2ean($params['value']));
    }

    function ean2productId($value) {
        die('ean2productId()')
    }

    function productId2ean($value) {
        die('productId2ean()');
    }
}