public function processContent(string $content): string
    {
        $matches = Strings::matchAll($content, '#\[' . RegexPattern::PR_OR_ISSUE . '\]#m');
        foreach ($matches as $match) {
            $link = sprintf('[#%d]: %s/pull/%d', $match['id'], $this->repositoryUrl, $match['id']);
            $this->linkAppender->add($match['id'], $link);
        }

        return $content;
    }