function OnLoadPageData()
 {
     $authentication_manager = $this->GetAuthenticationManager();
     $authentication_manager->ReadUserById(array($this->user->GetId()));
     $this->user = $authentication_manager->GetFirst();
     if (!is_null($this->user)) {
         $topic_manager = new TopicManager($this->GetSettings(), $this->GetDataConnection());
         $this->a_messages = $topic_manager->ReadMessagesByUser($this->user->GetId());
         unset($topic_manager);
     } else {
         http_response_code(404);
     }
 }