Amazon_S3_And_CloudFront::load_attachment_assets PHP Method

    public function load_attachment_assets($hook_suffix)
    {
        $version = $this->get_asset_version();
        $suffix = $this->get_asset_suffix();
        global $post;
        if ('post.php' != $hook_suffix || 'attachment' != $post->post_type) {
            return;
        }
        $src = plugins_url('assets/css/attachment.css', $this->plugin_file_path);
        wp_enqueue_style('as3cf-pro-attachment-styles', $src, array('as3cf-modal'), $version);
        do_action('as3cf_load_attachment_assets', $version, $suffix);
    }