return "MapEntry <container=" + container + "; key=" + key + ">";
StringBuffer sb = new StringBuffer(); sb.append("MapEntry <container=").append(container); sb.append("; key=").append(key).append("; value="); sb.append(value).append(">"); return sb.toString();
    public String toString() {        return "MapEntry <container=" + container + "; key=" + key + ">";    }