public static function getNameByConstant($constant)
    {
        switch ($constant) {
            case self::AUTHOR:
                return 'author';
            break;

            case self::CANDIDATE:
                return 'candidate';
            break;

            case self::PROCTOR:
                return 'proctor';
            break;

            case self::SCORER:
                return 'scorer';
            break;

            case self::TEST_CONSTRUCTOR:
                return 'testConstructor';
            break;

            case self::TUTOR:
                return 'tutor';
            break;

            default:
                return false;
            break;
        }
    }