Doctrine\ODM\MongoDB\Tools\DocumentGenerator::setUpdateDocumentIfExists PHP Method

    public function setUpdateDocumentIfExists($bool)
    {
        $this->updateDocumentIfExists = $bool;
    }

 /**
  * @return \Doctrine\ODM\MongoDB\Tools\DocumentGenerator
  */
 protected function getDocumentGenerator()
 {
     $documentGenerator = new DocumentGenerator();
     $documentGenerator->setGenerateAnnotations(true);
     $documentGenerator->setGenerateStubMethods(true);
     $documentGenerator->setRegenerateDocumentIfExists(false);
     $documentGenerator->setUpdateDocumentIfExists(true);
     $documentGenerator->setNumSpaces(4);
     return $documentGenerator;
 }