if ($http->getHttpAccept() == 'json') {
             Rest::sendResponse(200, json_encode($userCommentArray), 'application/json');
         } else {
             if ($http->getHttpAccept() == 'xml') {
                 $options = array('indent' => '     ', 'addDecl' => false, "defaultTagName" => "user_comment", XML_SERIALIZER_OPTION_RETURN_RESULT => true);
                 $serializer = new XML_Serializer($options);
                 Rest::sendResponse(200, $serializer->serialize($userCommentArray), 'application/xml');
             }
         }
     } else {
         Rest::sendResponse(204);
     }
     break;
 case 'delete':
     $userMapper = new UserMapper();
     if ($userMapper->stopFollow($url->getIdFirstPart(), $url->getIdSecondPart())) {
         Rest::sendResponse(200);
     }
     break;
 case 'put':
     try {
         $user_comment_ = new User_comment();
         $data_user_comment_ = $http->getRequestVars();
         $user_comment_ = initObject($data_user_comment_, $user_comment_, true);
         if (!emptyObject($user_comment_)) {
             $user_commentMapper = new \User_commentMapper();
             if ($user_commentMapper->update($user_comment_)) {
                 Rest::sendResponse(200);
             }
         } else {
             throw new InvalidArgumentException('Need arguments to UPDATA data !');