Debugger::getActiveDocument

private function getActiveDocument(Session $session): array
{
	$document = $session->getFixedDocument();

	if (!$document || !$this->isDocumentExists($document->getParameterDocumentId()))
	{
		$this->addError(new Error(Loc::getMessage('BIZPROC_CONTROLLER_DEBUGGER_NO_DOCUMENT'), 404));

		return [null, null];
	}

	return [$document->getDocumentId(), $session->getParameterDocumentType()];
}