public function getSurveyApplicationValues()
    {
        static $data;

        if (! $data) {
            $data = array(
                self::APPLY_NOT  => $this->_('No'),
                self::APPLY_DO   => $this->_('Yes (for individual tokens)'),
                self::APPLY_STOP => $this->_('Stop (for tokens in uncompleted tracks)'));
        }

        return $data;
    }