protected function getExperimentalComment()
    {
        $experimentalComment = null;

        foreach ($this->getCommentSections() as $commentSection) {
            // Identify the experimental notice by the Experimental: marker
            if (preg_match('/^\s*Experimental:/i', $commentSection)) {
                $experimentalComment = $commentSection;
                break;
            }
        }

        return $experimentalComment;
    }