Prado\Util\TSimpleDateFormatter::getYearPattern PHP Method

    public function getYearPattern()
    {
        if (is_int(strpos($this->pattern, 'yyyy'))) {
            return 'yyyy';
        }
        if (is_int(strpos($this->pattern, 'yy'))) {
            return 'yy';
        }
        return false;
    }