public function format_column_name($grade_item, $feedback=false, $gradedisplayname = null) {
        $column = new stdClass();

        if ($grade_item->itemtype == 'mod') {
            $column->name = get_string('modulename', $grade_item->itemmodule).get_string('labelsep', 'langconfig').$grade_item->get_name();
        } else {
            $column->name = $grade_item->get_name(true);
        }

        // We can't have feedback and display type at the same time.
        $column->extra = ($feedback) ? get_string('feedback') : get_string($gradedisplayname, 'grades');

        return html_to_text(get_string('gradeexportcolumntype', 'grades', $column), 0, false);
    }