public function writeCoreSetupData($user, $password, $backend = 'SQLite', $properties = array())
    {
        return $this->write(array(
            'MsgType' => 'CoreSetupData',
            'SetupData' => array(
                'AdminUser' => (string)$user,
                'AdminPasswd' => (string)$password,
                'Backend' => (string)$backend,
                'ConnectionProperties' => $properties
            )
        ));
    }