TYPO3 eID use with Extbase and Fluid

<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2011 Alex Kellner <[email protected]>, in2code.de
*
*  All rights reserved
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 3 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/

/**
 * This class could called with AJAX via eID and should show some branches
 *
 * @author  Alex Kellner <[email protected]>, in2code.
 * @package TYPO3
 * @subpackage  tx_in2evaluation_eid_deleteForm
 */
class tx_in2trainee_eid_branchfilter {

    /**
     * configuration
     *
     * @var array
     */
    protected $configuration;

    /**
     * bootstrap
     *
     * @var array
     */
    protected $bootstrap;

    /**
     * Generates the output
     *
     * @return string       from action
     */
    public function main() {
        return $this->bootstrap->run('', $this->configuration);
    }

    /**
     * Initialize Extbase
     *
     * @return void
     */
    public function __construct() {
        $this->configuration = array(
            'pluginName' => 'Pi1',
            'extensionName' => 'In2trainee',
            'controller' => 'Trainee',
            'action' => 'eidBranchFilter',
            'mvc' => array(
                'requestHandlers' => array(
                    'Tx_Extbase_MVC_Web_FrontendRequestHandler' => 'Tx_Extbase_MVC_Web_FrontendRequestHandler'
                )
            ),
            'settings' => array()
        );
        $_POST['tx_in2trainee_pi1']['action'] = 'eidBranchFilter'; // set action

        $this->bootstrap = new Tx_Extbase_Core_Bootstrap();
        //$this->bootstrap->cObj = t3lib_div::makeInstance('tslib_cObj'); // example for cObj instance
    }
}

$eid = t3lib_div::makeInstance('tx_in2trainee_eid_branchfilter'); // make instance
echo $eid->main(); // print content
?>