public function filterByIsTutorial($isTutorial = null, $comparison = null)
    {
        if (is_string($isTutorial)) {
            $isTutorial = in_array(strtolower($isTutorial), array('false', 'off', '-', 'no', 'n', '0', '')) ? false : true;
        }

        return $this->addUsingAlias(VideoTableMap::COL_IS_TUTORIAL, $isTutorial, $comparison);
    }