public function parseHtml($html)
    {
        return Parser::table($html, '#DBGrid', [
            'status', 'name', 'credit', 'examination', 'property', 'teacher', 'code', 'week',
            ['hour', function (Crawler $crawler) {
                return $crawler->attr("title") ?: $crawler->text();
            }],
            ['place', function (Crawler $crawler) {
                return $crawler->text() == ";" ? '' : ($crawler->attr("title") ?: $crawler->text());
            }],
            'campus',
            ['class', function (Crawler $crawler) {
                return $crawler->attr("title") ?: $crawler->text();
            }],
        ], 12, 1, 'text');
    }