protected function _classFileHeader($className)
    {
        $header = <<<TEXT
<?php
/**
 * Licensed under The GPL-3.0 License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @since    2.0.0
 * @author   Christopher Castro <chris@quickapps.es>
 * @link     http://www.quickappscms.org
 * @license  http://opensource.org/licenses/gpl-3.0.html GPL-3.0 License
 */

TEXT;

        if ($this->params['fixture']) {
            $header .= <<<TEXT
namespace CMS\Test\Fixture;

use Cake\TestSuite\Fixture\TestFixture;


TEXT;
        }

        $header .= $this->params['fixture'] ? "class {$className} extends TestFixture\n" : "\nclass {$className}\n";

        return $header;
    }