private function registerAssets()
    {
        $al = AssetList::getInstance();
        $al->registerMultiple([
            'jquery/scroll-to' => [
                ['javascript', 'js/jquery.scrollTo.min.js', ['minify' => true, 'combine' => true, 'version' => '2.1.2'], $this],
            ],
            'community_translation/online_translation/bootstrap' => [
                ['javascript', 'js/bootstrap.min.js', ['minify' => false, 'combine' => true], $this],
            ],
            'community_translation/online_translation/markdown-it' => [
                ['javascript', 'js/markdown-it.min.js', ['minify' => false, 'combine' => true], $this],
            ],
            'community_translation/online_translation/core' => [
                ['css', 'css/online-translation.css', ['minify' => false, 'combine' => true], $this],
                ['javascript', 'js/online-translation.js', ['minify' => true, 'combine' => true], $this],
            ],
            'jquery/comtraSortable' => [
                ['css', 'css/jquery.comtraSortable.css', ['minify' => true, 'combine' => true], $this],
                ['javascript', 'js/jquery.comtraSortable.js', ['minify' => true, 'combine' => true], $this],
            ],
        ]);
        $al->registerGroupMultiple([
            'jquery/scroll-to' => [
                [
                    ['javascript', 'jquery'],
                    ['javascript', 'jquery/scroll-to'],
                ],
            ],
            'community_translation/online_translation' => [
                [
                    ['css', 'community_translation/online_translation/core'],
                    ['javascript', 'community_translation/online_translation/bootstrap'],
                    ['javascript', 'community_translation/online_translation/markdown-it'],
                    ['javascript', 'community_translation/online_translation/core'],
                ],
            ],
            'jquery/comtraSortable' => [
                [
                    ['css', 'font-awesome'],
                    ['css', 'jquery/comtraSortable'],
                    ['javascript', 'jquery/comtraSortable'],
                ],
            ],
        ]);
    }