def METHOD_NAME(job, position):
    """
    Checks to see if certain submodules have been updated and post a comment to the PR if so.
    """
    output = get_output_by_position(job, position)
    modules = find_in_output(output, "CIVET_CLIENT_SUBMODULE_UPDATES")
    if not modules:
        return False
    if not job.event.pull_request or not job.event.pull_request.review_comments_url:
        return False
    for mod in modules.split():
        api = job.event.build_user.api()
        url = job.event.pull_request.review_comments_url
        sha = job.event.head.sha
        msg = "**Caution!** This contains a submodule update"
        # The 2 position will leave the message on the new submodule hash
        api.pr_review_comment(url, sha, mod, 2, msg)
        return True