public function create_item($request)
 {
     $params = $request->get_params();
     $question_id = $params['question_id'];
     $value = $params['value'];
     $response = new \WeBWorK\Server\Response();
     $response->set_author_id(get_current_user_id());
     $response->set_content($value);
     $response->set_question_id($question_id);
     if ($response->save()) {
         $retval = array('responseId' => $response->get_id(), 'content' => $response->get_content(), 'authorAvatar' => $response->get_author_avatar(), 'authorName' => $response->get_author_name());
         $r = rest_ensure_response($retval);
         $r->set_status(201);
     } else {
         $r = rest_ensure_response(false);
         $r->set_status(500);
     }
     return $r;
 }