public function write() : void
    {
        if (!$this->features) {
            return;
        }
        $i = 0;
        while (true) {
            $file = sprintf('%s/%s%s.php', $this->config->output, $this->normalize($this->objectUnderTest->getName()), $i ? ".$i" : '');
            if (!file_exists($file)) {
                break;
            }
            ++$i;
        }
        file_put_contents($file, $this->render());
    }