/**
  * @param ilChatroom     $room
  * @param string         $title
  * @param ilChatroomUser $owner
  * @return mixed
  */
 public function createPrivateRoom(ilChatroom $room, $title, ilChatroomUser $owner)
 {
     $settings = array('public' => false);
     $params['user'] = $owner->getUserId();
     $params['id'] = $room->addPrivateRoom($title, $owner, $settings);
     $query = http_build_query($params);
     $response = $this->sendCreatePrivateRoom($room->getRoomId(), $query);
     $responseObject = json_decode($response);
     $return = $responseObject;
     if ($responseObject->success == true) {
         $message = json_encode(array('type' => 'private_room_created', 'timestamp' => date('c'), 'public' => 0, 'title' => $title, 'id' => $responseObject->id, 'proom_id' => $responseObject->id, 'owner' => $owner->getUserId()));
         $result = $this->sendMessage($room->getRoomId(), $message, array('public' => 0, 'recipients' => $owner->getUserId()));
         $params = array();
         $params['user'] = $owner->getUserId();
         $params['sub'] = $responseObject->id;
         $query = http_build_query($params);
         $response = $this->enterPrivateRoom($room->getRoomId(), $query);
         $room->subscribeUserToPrivateRoom($params['sub'], $params['user']);
         $message = json_encode(array('type' => 'private_room_entered', 'user' => $owner->getUserId(), 'timestamp' => date('c'), 'sub' => $responseObject->id));
         $this->sendMessage($room->getRoomId(), $message);
     }
     return $responseObject;
 }