PhpCsFixer\Test\IntegrationCaseFactory::determineCode PHP Метод

    private function determineCode($code, SplFileInfo $file, $suffix)
    {
        if (null !== $code) {
            return $code;
        }
        $candidateFile = new SplFileInfo($file->getPathname() . $suffix, '', '');
        if ($candidateFile->isFile()) {
            return $candidateFile->getContents();
        }
    }