code: private function refreshSession ()
  	{
  		$mapper = Neuron_GameServer_Mappers_UpdateMapper::getInstance ();
  
  		// First check if we have a last id
  		if (!isset ($_SESSION['ngpu_lastlog']))
  		{
  			// New session, can't have updates. No flags set.
  			$_SESSION['ngpu_lastlog'] = $mapper->getLastLogId ($this->objProfile);
  			$_SESSION['ngpu_data'] = array ();
  		}
  
  		else
  		{
  			$lastLogId = $_SESSION['ngpu_lastlog'];
  
  			// Check for updates
  			$updates = $mapper->getUpdates ($this->objProfile, $lastLogId);
  
  			// Process these updates
  			foreach ($updates as $v)
  			{
  				$_SESSION['ngpu_data'][$v['key']] = $v['value'];
  				$lastLogId = max ($v['id'], $lastLogId);
  			}
  
  			$_SESSION['ngpu_lastlog'] = $lastLogId;
  		}
  	}
docs: This method refreshes the session and makes sure we have
  the latest data from the database.