@Override
    public String toString() {
        String result = "Subject: " + this.getSubject() +
                " Description: " + this.getDescription() +
                " AuthorID: " + this.getAuthor() +
                " CommentIDs: ";
        for (Integer comment : this.getComments()) {
            result += comment + ", ";
        }
        result += " AttachmentIDs: ";
        for (String attachment : this.getAttachments()) {
            result += attachment + ", ";
        }
        return result;
    }