public function addPageSummaryMetaBox($postType, $post)
    {
        $allowedPostTypes = get_field('customer_feedback_posttypes', 'option');

        if (!isset($post->ID) || (is_array($allowedPostTypes) && !in_array($postType, $allowedPostTypes))) {
            return;
        }

        $answers = Responses::getResponses($post->ID);

        if (count($answers) === 0) {
            return;
        }

        add_meta_box(
            'customer-feedback-summary-meta',
            __('Customer feedback summary', 'customer-feedback') . ' (' . __('since', 'customer-feedback') . ' ' . get_the_modified_date('Y-m-d H:i') . ')',
            array($this, 'renderSummary'),
            $postType,
            'side',
            'default',
            array(
                'results' => $answers
            )
        );
    }