public function galleryTopic($topicId, $sort = 'viral', $page = 0, $window = 'week')
    {
        $this->validateSortArgument($sort, ['viral', 'top', 'time', 'rising']);
        $this->validateWindowArgument($window, ['day', 'week', 'month', 'year', 'all']);

        return $this->get('topics/' . $topicId . '/' . $sort . '/' . $window . '/' . $page);
    }