public function get_overall_feedback_content() {

        if ($this->workshop->overallfeedbackmode == 0) {
            return false;
        }

        if (trim($this->feedbackauthor) === '') {
            return null;
        }

        $content = file_rewrite_pluginfile_urls($this->feedbackauthor, 'pluginfile.php', $this->workshop->context->id,
            'mod_workshop', 'overallfeedback_content', $this->id);
        $content = format_text($content, $this->feedbackauthorformat,
            array('overflowdiv' => true, 'context' => $this->workshop->context));

        return $content;
    }