/** @var TextSlotDiffRenderer $slotDiffRenderer */
$slotDiffRenderer = ContentHandler::getForModelID( CONTENT_MODEL_TEXT )
->getSlotDiffRenderer( RequestContext::getMain() );
+ '@phan-var TextSlotDiffRenderer $slotDiffRenderer';
return $slotDiffRenderer->getTextDiff( $oldText, $newText );
}