protected function setDefaultConfiguration($rawContent)
    {
        $resolvedContent = strtr($rawContent, $this->unresolveableReplacementPairs);

        $cacheFile = tempnam($this->cacheDir, 'tmp');

        $fh = fopen($cacheFile, 'w');

        fwrite($fh, $resolvedContent);

        fclose($fh);

        $this->defaultConfiguration = include($cacheFile);

        unlink($cacheFile);
    }