func shouldPrune(log *logrus.Entry) func(github.IssueComment) bool {
	return func(comment github.IssueComment) bool {
		return strings.Contains(comment.Body, dcoMsgPruneMatch)
	}
}
func shouldPrune(log *logrus.Entry) func(github.IssueComment) bool {
	return func(comment github.IssueComment) bool {
		return strings.Contains(comment.Body, dcoMsgPruneMatch)
	}
}
// shouldPrune finds comments left by this plugin.