} else if(obj instanceof NSTimestamp && isTimestampAttribute(eoattribute)) {
} else if((obj instanceof NSTimestamp) && isTimestampAttribute(eoattribute)) {
    public String formatValueForAttribute(Object obj, EOAttribute eoattribute) {        String value;        if(obj instanceof NSData) {            value = sqlStringForData((NSData)obj);        } else if(obj instanceof NSTimestamp && isTimestampAttribute(eoattribute)) {            value = "'" + _TIMESTAMP_FORMATTER.format(obj) + "'";        } else {            value = ((obj == null || obj == NSKeyValueCoding.NullValue) ? "NULL" : obj.toString());        }        return value;    }