private static void export( PropertyIsLessThan operator, XMLStreamWriter writer )
throws XMLStreamException {
writer.writeStartElement( FES_20_NS, "PropertyIsLessThan" );
String matchAction = retrieveMatchActionAsString( operator, writer );
if ( matchAction != null )
writer.writeAttribute( "matchAction", matchAction );
writer.writeAttribute( "matchCase", Boolean.toString( operator.isMatchCase() ) );
export( operator.getParameter1(), writer );
export( operator.getParameter2(), writer );
writer.writeEndElement();
}