olá pessoal estou editando um script e esta dando o seguinte erro
 
	Fatal error: Call to undefined method Session::getState() in C:\Users\wsa\Desktop\USBWebserver v8.6\root\index.php on line 42
 
	 
 
	// objects 
	$session = new Session; 
	$logger = new Logger; 
	$db_mapper = new DbMapper; 
	$user = new User("", "", "", "", "", "", "");
 
	 
 
	42   if ($session->getState($session_state)){ 
	43   $username = $session->getUsername(); 
	44   $user = $db_mapper->getUser($username); 
	}