protected function doRun() { $from = $this->getArgumentThreemaId(self::argFrom); $secret = $this->getArgument(self::argSecret); Common::required($from, $secret); //define connection settings $settings = new ConnectionSettings($from, $secret); //create a connection $connector = new Connection($settings, $this->publicKeyStore); $result = $connector->credits(); Common::required($result); if ($result->isSuccess()) { Common::l("remaining credits: " . $result->getCredits()); } else { Common::e($result->getErrorMessage()); } }