- $wgParser->startExternalParse( $titleObj, $popts, Parser::OT_PREPROCESS );
- $xml = $wgParser->preprocessToDom( $this->content->getText() )->__toString();
+ $parser = MediaWikiServices::getInstance()->getParser();
+ $parser->startExternalParse( $titleObj, $popts, Parser::OT_PREPROCESS );
+ // @phan-suppress-next-line PhanUndeclaredMethod
+ $xml = $parser->preprocessToDom( $this->content->getText() )->__toString();