function writeTimestamp( $timestamp ) {
$ts = wfTimestamp( TS_ISO_8601, $timestamp );
return " " . Xml::element( 'timestamp', null, $ts ) . "\n";
}
function writeTimestamp( $timestamp ) {
$ts = wfTimestamp( TS_ISO_8601, $timestamp );
return " " . Xml::element( 'timestamp', null, $ts ) . "\n";
}