[php]
$classes = $dm->getClassMetadataInfoFactory()->getAllMetadata();
$generator = new \Doctrine\ODM\MongoDB\Tools\DocumentGenerator();
$generator->setGenerateAnnotations(true);
$generator->setGenerateStubMethods(true);
$generator->setRegenerateDocumentIfExists(false);
$generator->setUpdateDocumentIfExists(true);
$generator->generate($classes, '/path/to/generate/documents');