protected function render_workshop_example_submission(workshop_example_submission $example) {

        $o  = '';    // output HTML code
        $classes = 'submission-full example';
        $o .= $this->output->container_start($classes);
        $o .= $this->output->container_start('header');
        $o .= $this->output->container(format_string($example->title), array('class' => 'title'));
        $o .= $this->output->container_end(); // end of header

        $content = file_rewrite_pluginfile_urls($example->content, 'pluginfile.php', $this->page->context->id,
                                                        'mod_workshop', 'submission_content', $example->id);
        $content = format_text($content, $example->contentformat, array('overflowdiv'=>true));
        $o .= $this->output->container($content, 'content');

        $o .= $this->helper_submission_attachments($example->id, 'html');

        $o .= $this->output->container_end(); // end of submission-full

        return $o;
    }