protected function getErrorMessage(\Requirement $requirement, $lineSize = 70)
    {
        if ($requirement->isFulfilled()) {
            return;
        }

        $errorMessage = wordwrap($requirement->getTestMessage(), $lineSize - 3, PHP_EOL.'   ').PHP_EOL;
        $errorMessage .= '   > '.wordwrap($requirement->getHelpText(), $lineSize - 5, PHP_EOL.'   > ').PHP_EOL;

        return $errorMessage;
    }