Text im PDF andrucken

Um z.B. den Barcode-Wert auf dem PDF anzudrucken, kann die der UserExit BeforeExport wie folgt angepasst werden: 
 Voraussetzung: Squeeze Version: >=1.11.0 
 <?php

use Squeeze\ImageTools;
use Squeeze\xDoc;
use Squeeze\xDocFolders;
use Squeeze\xReturnObject;
use Squeeze\xTools;
use App\V2\Base\Config\TenantConfig;
use App\V2\Base\DI\Dependencies;

/**
 * @param xDoc $doc
 * @return xReturnObject
 */
function BeforeExport(xDoc $doc): xReturnObject
{
 try {
 $dirSep = DIRECTORY_SEPARATOR;
 $config = Dependencies::getContainer()->get(TenantConfig::class);
 $repo = $config->get('repository.root');
 $absolutePath = xTools::buildAbsolutePath($repo, $doc->repoPath, false);

 $inputDir = $absolutePath . xDocFolders::INPUT . $dirSep;
 $workDir = $absolutePath . xDocFolders::WORK . $dirSep;

 $printValue = $doc->getFieldByName('DocumentReference')->getValue()->value;

 $files = scandir($inputDir);
 foreach ($files as $file) {
 $extension = strtolower(pathinfo($inputDir . $file, PATHINFO_EXTENSION));
 if ($extension == "pdf") {

 //if($file == "_result.pdf") continue;

 $pdfInfo = ImageTools::getPdfInfo($inputDir . $file, 1, 1);
 $pdfWidth = $pdfInfo['pages'][1]['width'] / 300 * 25.4;
 $pdfHeight = $pdfInfo['pages'][1]['height'] / 300 * 25.4;
 $pdf = ImageTools::pdfPrintText($pdfWidth, $pdfHeight, $printValue, 1, 1, 'Courier', 10, 4, true);
 file_put_contents($workDir . 'textlayer.pdf', $pdf);

 $overlayResult = ImageTools::addLayerToPdf($inputDir . $file, $workDir . 'textlayer.pdf');
 if ($overlayResult !== true) {
 unlink($workDir . 'textlayer.pdf');
 throw new Exception('Error while adding a PDF Layer');
 }
 unlink($workDir . 'textlayer.pdf');
 }
 }

 return new xReturnObject(true, 200, 'UserExit BeforeExport successful', null);
 } catch (Exception $e) {
 $logger = Logger::getLogger("main");
 $logger->error($e->getMessage());
 return new xReturnObject(false, 500, $e->getMessage(), null);
 }
}