Document::getDocument

private function getDocument(): \Bitrix\DocumentGenerator\Document
{
	if (!$this->document)
	{
		$this->document = \Bitrix\DocumentGenerator\Document::loadById($this->getDocumentId());
		if (!$this->document)
		{
			throw new ObjectNotFoundException('Could not find document with ID=' . $this->getDocumentId());
		}

		DocumentGeneratorManager::getInstance()->actualizeDocumentImmediately($this->document);
	}

	return $this->document;
}