if ( isset( $prop['parsetree'] ) || $params['generatexml'] ) {
$parser->startExternalParse( $titleObj, $options, Parser::OT_PREPROCESS );
$dom = $parser->preprocessToDom( $params['text'] );
if ( isset( $prop['parsetree'] ) || $params['generatexml'] ) {
$parser->startExternalParse( $titleObj, $options, Parser::OT_PREPROCESS );
$dom = $parser->preprocessToDom( $params['text'] );